diff --git a/Casks/adium.rb b/Casks/adium.rb
index 5b1fb936d..e6432f8d3 100644
--- a/Casks/adium.rb
+++ b/Casks/adium.rb
@@ -2,6 +2,5 @@ class Adium < Cask
   url 'http://download.adium.im/Adium_1.5.4.dmg'
   homepage 'http://www.adium.im/'
   version '1.5.4'
-  content_length '23840321'
   sha1 '4aff5c040143fb8a8176662c1881815c41874bd0'
 end
diff --git a/Casks/alfred.rb b/Casks/alfred.rb
index b9cb22c12..38f522b21 100644
--- a/Casks/alfred.rb
+++ b/Casks/alfred.rb
@@ -2,6 +2,5 @@ class Alfred < Cask
   url 'http://cachefly.alfredapp.com/alfred_1.3.2_265.zip'
   homepage 'http://www.alfredapp.com/'
   version '1.3.2_265'
-  content_length '2385318'
   sha1 'e10f15a0ae758cae2a22557f14890fa5989260ce'
 end
diff --git a/Casks/anvil.rb b/Casks/anvil.rb
index e0151dee9..e76ca8a51 100644
--- a/Casks/anvil.rb
+++ b/Casks/anvil.rb
@@ -2,6 +2,5 @@ class Anvil < Cask
   url 'http://anvilformac.com/download'
   homepage 'http://anvilformac.com/'
   version 'latest'
-  content_length '2322000'
   no_checksum
 end
diff --git a/Casks/ap-grapher.rb b/Casks/ap-grapher.rb
index 86da6365b..fa10194cc 100644
--- a/Casks/ap-grapher.rb
+++ b/Casks/ap-grapher.rb
@@ -2,6 +2,5 @@ class ApGrapher < Cask
   url 'http://www.chimoosoft.com/downloads/current/APGrapher.dmg'
   homepage 'http://www.chimoosoft.com/products/apgrapher/'
   version 'latest'
-  content_length '1113716'
   no_checksum
 end
diff --git a/Casks/aquamacs.rb b/Casks/aquamacs.rb
index b7b347a30..8481ca706 100644
--- a/Casks/aquamacs.rb
+++ b/Casks/aquamacs.rb
@@ -2,6 +2,5 @@ class Aquamacs < Cask
   url 'http://braeburn.aquamacs.org/~dr/Aquamacs/24/Aquamacs-nightly.tar.bz2'
   homepage 'http://aquamacs.org/'
   version '3.x Nightly'
-  content_length '50220871'
   no_checksum
 end
diff --git a/Casks/arq.rb b/Casks/arq.rb
index 51b20395b..0212e2252 100644
--- a/Casks/arq.rb
+++ b/Casks/arq.rb
@@ -2,6 +2,5 @@ class Arq < Cask
   url 'http://www.haystacksoftware.com/arq/Arq.zip'
   homepage 'http://www.haystacksoftware.com/arq/'
   version 'latest'
-  content_length '9118163'
   no_checksum
 end
diff --git a/Casks/at-monitor.rb b/Casks/at-monitor.rb
index 6290f7957..a4049e931 100644
--- a/Casks/at-monitor.rb
+++ b/Casks/at-monitor.rb
@@ -2,6 +2,5 @@ class AtMonitor < Cask
   url 'http://download.atpurpose.com/atMonitor/atMonitor.zip'
   homepage 'http://www.atpurpose.com/atMonitor/'
   version 'latest'
-  content_length '1380053'
   no_checksum
 end
diff --git a/Casks/back-in-time.rb b/Casks/back-in-time.rb
index 92abc9650..aa7275260 100644
--- a/Casks/back-in-time.rb
+++ b/Casks/back-in-time.rb
@@ -2,6 +2,5 @@ class BackInTime < Cask
   url 'http://www.tri-edre.com/pub/files/backintime203.dmg'
   homepage 'http://www.tri-edre.fr/english/backintime.html'
   version '2.0.3'
-  content_length '7532553'
   sha1 '3c30818d789f5b7da9645f7dd2784b7183f1caf1'
 end
diff --git a/Casks/bartender.rb b/Casks/bartender.rb
index 2ffb33bb2..7e77385b1 100644
--- a/Casks/bartender.rb
+++ b/Casks/bartender.rb
@@ -2,6 +2,5 @@ class Bartender < Cask
   url 'http://www.macbartender.com/Demo/Bartender.zip'
   homepage 'http://www.macbartender.com/'
   version 'latest'
-  content_length '4380381'
   no_checksum
 end
diff --git a/Casks/bettertouchtool.rb b/Casks/bettertouchtool.rb
index d2e23e07d..49d4ae87c 100644
--- a/Casks/bettertouchtool.rb
+++ b/Casks/bettertouchtool.rb
@@ -2,6 +2,5 @@ class Bettertouchtool < Cask
   url 'http://www.boastr.de/BetterTouchTool.zip'
   homepage 'http://blog.boastr.net/'
   version 'latest'
-  content_length '3527830'
   no_checksum
 end
diff --git a/Casks/boot-x-changer.rb b/Casks/boot-x-changer.rb
index 6cc25d934..eddf775ea 100644
--- a/Casks/boot-x-changer.rb
+++ b/Casks/boot-x-changer.rb
@@ -2,6 +2,5 @@ class BootXChanger < Cask
   url 'http://namedfork.net/_media/bootxchanger_2.0.dmg'
   homepage 'http://namedfork.net/bootxchanger'
   version '2.0'
-  content_length '694615'
   sha1 'bc8c80913ba09c1fc2f354b954b321f261bb2e36'
 end
diff --git a/Casks/brackets.rb b/Casks/brackets.rb
index 8fa676d2d..e6993ed67 100644
--- a/Casks/brackets.rb
+++ b/Casks/brackets.rb
@@ -2,6 +2,5 @@ class Brackets < Cask
   url 'http://download.brackets.io/file.cfm?platform=OSX&build=19'
   homepage 'http://brackets.io'
   version 'sprint-19'
-  content_length '26145505'
   sha1 'e08c6ea3b4951a3111c768ee9ac522126190b4d1'
 end
diff --git a/Casks/caffeine.rb b/Casks/caffeine.rb
index c1714c1e4..767c8988b 100644
--- a/Casks/caffeine.rb
+++ b/Casks/caffeine.rb
@@ -2,6 +2,5 @@ class Caffeine < Cask
   url 'http://download.lightheadsw.com/download.php?software=caffeine'
   homepage 'http://lightheadsw.com/caffeine/'
   version '1.1.1'
-  content_length '260503'
   sha1 'd2fbdad1619934313026fc831e6c6e3dd97ac030'
 end
diff --git a/Casks/camino.rb b/Casks/camino.rb
index d082db8bf..072437d30 100644
--- a/Casks/camino.rb
+++ b/Casks/camino.rb
@@ -2,6 +2,5 @@ class Camino < Cask
   url 'http://download.cdn.mozilla.net/pub/mozilla.org/camino/releases/en-US/Camino-2.1.2.dmg'
   homepage 'http://caminobrowser.org/'
   version '2.1.2'
-  content_length '19549854'
   sha1 '092dae4c85614cc1bbf76a3ce8335f1cc452d949'
 end
diff --git a/Casks/candybar.rb b/Casks/candybar.rb
index 4ff2abe81..9ca5c5815 100644
--- a/Casks/candybar.rb
+++ b/Casks/candybar.rb
@@ -2,7 +2,6 @@ class Candybar < Cask
   url 'http://panic.com/museum/candybar/CandyBar%203.3.4.zip'
   homepage 'http://panic.com/museum/candybar/'
   version '3.3.4'
-  content_length '133007800'
   sha1 'f645e9da45a621415a07a7492c45923b1a1fd4d4'
 end
 
diff --git a/Casks/cfxr.rb b/Casks/cfxr.rb
index 89f1956d2..f5e1d670f 100644
--- a/Casks/cfxr.rb
+++ b/Casks/cfxr.rb
@@ -2,6 +2,5 @@ class Cfxr < Cask
   url 'http://github.com/downloads/nevyn/cfxr/cfxr%200.2.1.zip'
   homepage 'http://thirdcog.eu/apps/cfxr'
   version '0.2.1'
-  content_length '756001'
   sha1 'faf9b03f17f7c331b136cd49202d4a0c9c6bb23a'
 end
diff --git a/Casks/changes.rb b/Casks/changes.rb
index df1806a5c..9ea280c0f 100644
--- a/Casks/changes.rb
+++ b/Casks/changes.rb
@@ -2,7 +2,6 @@ class Changes < Cask
   url 'http://bitbq.com/changes/download.php'
   homepage 'http://bitbq.com/changes/'
   version 'latest'
-  content_length '1990799'
   no_checksum
 end
 
diff --git a/Casks/chocolat.rb b/Casks/chocolat.rb
index eeea08b69..4a7e8d978 100644
--- a/Casks/chocolat.rb
+++ b/Casks/chocolat.rb
@@ -2,7 +2,6 @@ class Chocolat < Cask
   url 'http://chocolatapp.com/download?experiment=&token='
   homepage 'http://chocolatapp.com/'
   version 'latest'
-  content_length '14545811'
   no_checksum
 end
 
diff --git a/Casks/chromium.rb b/Casks/chromium.rb
index dd44e8c5a..ee9075e6b 100644
--- a/Casks/chromium.rb
+++ b/Casks/chromium.rb
@@ -2,6 +2,5 @@ class Chromium < Cask
   homepage 'http://www.freesmug.org/chromium'
   url 'http://sourceforge.net/projects/osxportableapps/files/Chromium/ChromiumOSX_22.0.1229.92.dmg/download'
   version '22.0.1229.92'
-  content_length '43991068'
   sha1 'afb9ae77e4aa2a6e3321ffa314869698105bb22f'
 end
diff --git a/Casks/clip-menu.rb b/Casks/clip-menu.rb
index 3ca6eea51..6492bf78f 100644
--- a/Casks/clip-menu.rb
+++ b/Casks/clip-menu.rb
@@ -2,6 +2,5 @@ class ClipMenu < Cask
   url 'https://dl.dropbox.com/u/1140644/clipmenu/ClipMenu_0.4.3.dmg'
   homepage 'http://www.clipmenu.com/'
   version '0.4.3'
-  content_length '1131824'
   sha1 '9237d3f1e237f25fdd752e05d383d4b2a4274e3e'
 end
diff --git a/Casks/coconutbattery.rb b/Casks/coconutbattery.rb
index c34fd0445..42e0a744d 100644
--- a/Casks/coconutbattery.rb
+++ b/Casks/coconutbattery.rb
@@ -2,6 +2,5 @@ class Coconutbattery < Cask
   url 'http://www.coconut-flavour.com/downloads/coconutBattery_2.8.zip'
   homepage 'http://www.coconut-flavour.com/coconutbattery/'
   version '2.8'
-  content_length '556515'
   sha1 '25c8be852c89b112568a079919fc82a21b34bd88'
 end
diff --git a/Casks/colloquy.rb b/Casks/colloquy.rb
index 38f1b3a06..1da222095 100644
--- a/Casks/colloquy.rb
+++ b/Casks/colloquy.rb
@@ -2,7 +2,6 @@ class Colloquy < Cask
   url 'http://colloquy.info/downloads/colloquy-2.4.zip'
   homepage 'http://colloquy.info/'
   version '2.4'
-  content_length '7442191'
   sha1 'e0f6d4df8a09c5b48e0d972dc732cc1203b2384c'
 end
 
diff --git a/Casks/cura.rb b/Casks/cura.rb
index 65cc4bbdf..b72c5d26c 100644
--- a/Casks/cura.rb
+++ b/Casks/cura.rb
@@ -2,6 +2,5 @@ class Cura < Cask
   homepage 'http://daid.github.com/Cura/'
   url 'http://software.ultimaker.com/current/Cura-12.11-osx64.dmg'
   version '12.11'
-  content_length '92558002'
   sha1 '8fa56ce33d6a8d7604858e20273635ce3d926b7d'
 end
diff --git a/Casks/cyberduck.rb b/Casks/cyberduck.rb
index dd3e3e5a2..6d1b2ad53 100644
--- a/Casks/cyberduck.rb
+++ b/Casks/cyberduck.rb
@@ -2,6 +2,5 @@ class Cyberduck < Cask
   url 'http://cyberduck.ch/Cyberduck-4.2.1.zip'
   homepage 'http://cyberduck.ch'
   version '4.2.1'
-  content_length '24746156'
   sha1 '6f1e220830f324ba136b4301b12711f6037176c7'
 end
diff --git a/Casks/dashlane.rb b/Casks/dashlane.rb
index a3cd8f138..a7da5d1a6 100644
--- a/Casks/dashlane.rb
+++ b/Casks/dashlane.rb
@@ -2,6 +2,5 @@ class Dashlane < Cask
   url 'https://d3mfqat9ni8wb5.cloudfront.net/releases/1.7.5/1.7.5.28074/Dashlane.dmg'
   homepage 'https://www.dashlane.com/'
   version '1.7.5.28074'
-  content_length '38517522'
   sha1 'a79c49e7776c4b5da15f36cbbdc979dd21f24779'
 end
diff --git a/Casks/dia.rb b/Casks/dia.rb
index 2393c2775..2202f7231 100644
--- a/Casks/dia.rb
+++ b/Casks/dia.rb
@@ -2,6 +2,5 @@ class Dia < Cask
   homepage 'http://dia-installer.de/'
   url 'http://downloads.sourceforge.net/dia-installer/dia/0.97.2/Dia-0.97.2-5.dmg'
   version '0.97.2-5'
-  content_length '33631850'
   sha1 '20bcc65b63f44aaa2788a7183c4a254f6a57d57d'
 end
diff --git a/Casks/disk-inventory-x.rb b/Casks/disk-inventory-x.rb
index 5b7da57cb..4ed52f36b 100644
--- a/Casks/disk-inventory-x.rb
+++ b/Casks/disk-inventory-x.rb
@@ -2,6 +2,5 @@ class DiskInventoryX < Cask
   url 'http://www.derlien.com/download.php?file=DiskInventoryX'
   homepage 'http://www.derlien.com/'
   version 'latest'
-  content_length '2969560'
   no_checksum
 end
diff --git a/Casks/divvy.rb b/Casks/divvy.rb
index 94db000d3..0e9aa4ae2 100644
--- a/Casks/divvy.rb
+++ b/Casks/divvy.rb
@@ -2,6 +2,5 @@ class Divvy < Cask
   url 'http://mizage.com/downloads/Divvy.zip'
   homepage 'http://mizage.com/divvy/'
   version 'latest'
-  content_length '2377821'
   no_checksum
 end
diff --git a/Casks/dropbox.rb b/Casks/dropbox.rb
index b76ff8a8c..9ae677caa 100644
--- a/Casks/dropbox.rb
+++ b/Casks/dropbox.rb
@@ -2,6 +2,5 @@ class Dropbox < Cask
   url 'https://d1ilhw0800yew8.cloudfront.net/client/Dropbox%202.0.0.dmg'
   homepage 'http://www.dropbox.com/'
   version '2.0'
-  content_length '27397831'
   sha1 '80ee4ea6b34ffe1220430aea5e7ed035013850aa'
 end
diff --git a/Casks/eclipse.rb b/Casks/eclipse.rb
index ec35139a3..21ef2ae10 100644
--- a/Casks/eclipse.rb
+++ b/Casks/eclipse.rb
@@ -2,6 +2,5 @@ class Eclipse < Cask
   homepage 'http://eclipse.org'
   url 'http://mirrors.med.harvard.edu/eclipse/eclipse/downloads/drops4/R-4.2.1-201209141800/eclipse-SDK-4.2.1-macosx-cocoa-x86_64.tar.gz'
   version '4.2.1'
-  content_length '191008983'
   sha1 'b535207c06799e0034a9aa6a1262baf152560dba'
 end
diff --git a/Casks/emacs.rb b/Casks/emacs.rb
index b76fdf2b0..2e582c830 100644
--- a/Casks/emacs.rb
+++ b/Casks/emacs.rb
@@ -2,6 +2,5 @@ class Emacs < Cask
   url 'http://bandwidth.porkrind.org/emacs-builds/Emacs-24.2-universal-10.6.8.dmg'
   homepage 'http://emacsformacosx.com/'
   version '24.2'
-  content_length '55354843'
   sha1 '0f5d368420d410ab395d7aedcf63f5cc6e6aaf85'
 end
diff --git a/Casks/evernote.rb b/Casks/evernote.rb
index 0700732f5..b8df7132b 100644
--- a/Casks/evernote.rb
+++ b/Casks/evernote.rb
@@ -2,6 +2,5 @@ class Evernote < Cask
   url 'http://www.evernote.com/about/download/get.php?file=EvernoteMac'
   homepage 'http://evernote.com/'
   version '400808'
-  content_length '34853919'
   sha1 '80c8f94098d4755ff1dcd5a03d314738d2161ca4'
 end
diff --git a/Casks/f-lux.rb b/Casks/f-lux.rb
index 7dd82fc0e..d18071791 100644
--- a/Casks/f-lux.rb
+++ b/Casks/f-lux.rb
@@ -2,6 +2,5 @@ class FLux < Cask
   url 'https://secure.herf.org/flux/Flux.zip'
   homepage 'http://stereopsis.com/flux/'
   version 'latest'
-  content_length '1314863'
   no_checksum
 end
diff --git a/Casks/firefox-aurora.rb b/Casks/firefox-aurora.rb
index ab43c1414..2a52255e5 100644
--- a/Casks/firefox-aurora.rb
+++ b/Casks/firefox-aurora.rb
@@ -1,7 +1,6 @@
 class FirefoxAurora < Cask
   url 'https://ftp.mozilla.org/pub/mozilla.org/firefox/nightly/latest-mozilla-aurora/firefox-19.0a2.en-US.mac.dmg'
   homepage 'http://www.mozilla.org/en-US/firefox/aurora/'
-  content_length '49254741'
   version '19.0a2'
   no_checksum # This is a nightly
 end
diff --git a/Casks/firefox.rb b/Casks/firefox.rb
index ff9cce2dd..36f5e9a46 100644
--- a/Casks/firefox.rb
+++ b/Casks/firefox.rb
@@ -1,7 +1,6 @@
 class Firefox < Cask
   url 'http://download.cdn.mozilla.net/pub/mozilla.org/firefox/releases/17.0.1/mac/en-US/Firefox%2017.0.1.dmg'
   homepage 'http://www.mozilla.org/en-US/firefox/'
-  content_length '34958026'
   version '17.0.1'
   sha1 'a9888ce69440574fabff712549c8ff503fd1acb7'
 end
diff --git a/Casks/fluid.rb b/Casks/fluid.rb
index de18e741f..84b64b1a8 100644
--- a/Casks/fluid.rb
+++ b/Casks/fluid.rb
@@ -2,6 +2,5 @@ class Fluid < Cask
   url 'http://fluidapp.com/dist/Fluid_1.6.1.zip'
   homepage 'http://fluidapp.com/'
   version '1.6.1'
-  content_length '2499923'
   sha1 '7de2fe4372e9d055bd2bb6f5afcefa549740a7ce'
 end
diff --git a/Casks/flux.rb b/Casks/flux.rb
index fe1bcd8f4..ea642eefc 100644
--- a/Casks/flux.rb
+++ b/Casks/flux.rb
@@ -2,6 +2,5 @@ class Flux < Cask
   url 'http://instruktion.net/theescapers/downloads/FluxV4.zip'
   homepage 'http://www.theescapers.com/flux/'
   version '4'
-  content_length '45822538'
   sha1 '4c5ef6573bd6b55915ec26bf6ba16c10f83b30d1'
 end
diff --git a/Casks/free-cad.rb b/Casks/free-cad.rb
index b05d799b2..a6f5fffdf 100644
--- a/Casks/free-cad.rb
+++ b/Casks/free-cad.rb
@@ -2,6 +2,5 @@ class FreeCad < Cask
   url 'http://sourceforge.net/projects/free-cad/files/FreeCAD%20MacOSX/FreeCAD_0.12_MacOSX10.7_20120110_x64.dmg'
   homepage 'http://sourceforge.net/projects/free-cad/'
   version '0.12'
-  content_length '391216142'
   sha1 'f2629f5d113e7bd59b27364d9940d857b0433359'
 end
diff --git a/Casks/gephi.rb b/Casks/gephi.rb
index ac5146c69..3d831fdd6 100644
--- a/Casks/gephi.rb
+++ b/Casks/gephi.rb
@@ -2,6 +2,5 @@ class Gephi < Cask
   url 'https://launchpad.net/gephi/0.8/0.8.1beta/+download/gephi-0.8.1-beta.dmg'
   homepage 'http://gephi.org/'
   version '0.8.1'
-  content_length '39116463'
   sha1 '0bd1d9d5b1da69b77217949b788597a952cbd846'
 end
diff --git a/Casks/gfxcardstatus.rb b/Casks/gfxcardstatus.rb
index dcf8846c0..f13daa9b9 100644
--- a/Casks/gfxcardstatus.rb
+++ b/Casks/gfxcardstatus.rb
@@ -2,6 +2,5 @@ class Gfxcardstatus < Cask
   homepage 'http://gfx.io/'
   url 'http://codykrieger.com/downloads/gfxCardStatus-2.3.zip'
   version '2.3'
-  content_length '979240'
   sha1 '0bd1d9d5b1da69b77217949b788597a952cbd846'
 end
diff --git a/Casks/gimp.rb b/Casks/gimp.rb
index e1e502739..a5198d886 100644
--- a/Casks/gimp.rb
+++ b/Casks/gimp.rb
@@ -2,6 +2,5 @@ class Gimp < Cask
   url 'ftp://ftp.gimp.org/pub/gimp/v2.8/osx/gimp-2.8.2-dmg-2.dmg'
   homepage 'http://www.gimp.org'
   version '2.8.2'
-  content_length '63881252'
   sha1 'f9acaf794c7055e9ab3d5699963c684bbaf55f59'
 end
diff --git a/Casks/github.rb b/Casks/github.rb
index 975726be4..a145f515a 100644
--- a/Casks/github.rb
+++ b/Casks/github.rb
@@ -2,6 +2,5 @@ class Github < Cask
   url 'https://central.github.com/mac/latest'
   homepage 'http://mac.github.com'
   version 'latest'
-  content_length '10061271'
   no_checksum
 end
diff --git a/Casks/gitx-l.rb b/Casks/gitx-l.rb
index 0aaa7f396..0991dcb3b 100644
--- a/Casks/gitx-l.rb
+++ b/Casks/gitx-l.rb
@@ -2,7 +2,6 @@ class GitxL < Cask
   url 'https://github.com/downloads/laullon/gitx/GitX-L_v0.8.4.zip'
   homepage 'http://gitx.laullon.com/'
   version '0.8.4'
-  content_length '1383025'
   sha1 '86517311dcdc7348e308b542e3d5aad1a304f94f'
 end
 
diff --git a/Casks/gitx.rb b/Casks/gitx.rb
index 2226d7279..3cf886279 100644
--- a/Casks/gitx.rb
+++ b/Casks/gitx.rb
@@ -2,6 +2,5 @@ class Gitx < Cask
   url 'http://frim.frim.nl/GitXStable.app.zip'
   homepage 'http://gitx.frim.nl/'
   version 'latest'
-  content_length '1665028'
   no_checksum
 end
diff --git a/Casks/gmail-notifr.rb b/Casks/gmail-notifr.rb
index 7778306a8..b776e9d25 100644
--- a/Casks/gmail-notifr.rb
+++ b/Casks/gmail-notifr.rb
@@ -2,6 +2,5 @@ class GmailNotifr < Cask
   url 'https://github.com/downloads/ashchan/gmail-notifr/GmailNotifr-0.6.4.zip'
   homepage 'http://ashchan.com/projects/gmail-notifr'
   version '0.6.4'
-  content_length '11837209'
   sha1 '330a87bb9e0ed6209e6ad3f1d09e79b4c92674ef'
 end
diff --git a/Casks/gnucash.rb b/Casks/gnucash.rb
index 4d35079cb..5b0ae13a6 100644
--- a/Casks/gnucash.rb
+++ b/Casks/gnucash.rb
@@ -2,6 +2,5 @@ class Gnucash < Cask
   url 'http://downloads.sourceforge.net/sourceforge/gnucash/Gnucash-Intel-2.4.11.dmg'
   homepage 'http://www.gnucash.org'
   version '2.4.11'
-  content_length '92876907'
   sha1 '7c75756f8ce7fab4e7bc195d6d206e33109d03a8'
 end
diff --git a/Casks/google-chrome-canary.rb b/Casks/google-chrome-canary.rb
index e0351dbf8..bdcdaabbd 100644
--- a/Casks/google-chrome-canary.rb
+++ b/Casks/google-chrome-canary.rb
@@ -2,6 +2,5 @@ class GoogleChromeCanary < Cask
   url 'https://storage.googleapis.com/chrome-canary/GoogleChromeCanary.dmg'
   homepage 'https://tools.google.com/dlpage/chromesxs'
   version 'latest'
-  content_length '58637811'
   no_checksum
 end
diff --git a/Casks/google-chrome.rb b/Casks/google-chrome.rb
index 63e356218..187968833 100644
--- a/Casks/google-chrome.rb
+++ b/Casks/google-chrome.rb
@@ -2,6 +2,5 @@ class GoogleChrome < Cask
   url 'https://dl.google.com/chrome/mac/stable/GGRO/googlechrome.dmg'
   homepage 'https://www.google.com/chrome/'
   version 'stable-channel'
-  content_length '56466358'
   no_checksum
 end
diff --git a/Casks/google-notifier.rb b/Casks/google-notifier.rb
index fd8e85a94..11a6d80e6 100644
--- a/Casks/google-notifier.rb
+++ b/Casks/google-notifier.rb
@@ -2,6 +2,5 @@ class GoogleNotifier < Cask
   url 'http://dl.google.com/mac/download/GoogleNotifier_1.10.7.dmg'
   homepage 'http://toolbar.google.com/gmail-helper/notifier_mac.html'
   version '1.10.7'
-  content_length '1142033'
   sha1 '9ea16ae966033a1c6a5b9d50bb9e8d5080906059'
 end
diff --git a/Casks/handbrake.rb b/Casks/handbrake.rb
index 873f06ecd..0235e75d8 100644
--- a/Casks/handbrake.rb
+++ b/Casks/handbrake.rb
@@ -2,6 +2,5 @@ class Handbrake < Cask
   url 'http://handbrake.fr/rotation.php?file=HandBrake-0.9.8-MacOSX.6_GUI_x86_64.dmg'
   homepage 'http://handbrake.fr/'
   version '0.9.8'
-  content_length '7485495'
   sha1 'd255b4daa64cc359209e306ff9ef8a24a66e20aa'
 end
diff --git a/Casks/handbrakebatch.rb b/Casks/handbrakebatch.rb
index e9e571836..bd44e62fd 100644
--- a/Casks/handbrakebatch.rb
+++ b/Casks/handbrakebatch.rb
@@ -2,6 +2,5 @@ class Handbrakebatch < Cask
   url 'http://www.osomac.com/appcasts/handbrakebatch/HandBrakeBatch.zip'
   homepage 'http://www.osomac.com/apps/osx/handbrake-batch/'
   version 'latest'
-  content_length '14008464'
   no_checksum
 end
diff --git a/Casks/hands-off.rb b/Casks/hands-off.rb
index 7b24bf2a5..dd0d4232c 100644
--- a/Casks/hands-off.rb
+++ b/Casks/hands-off.rb
@@ -2,6 +2,5 @@ class HandsOff < Cask
   url 'https://www.metakine.com/files/Hands%20Off!%20v1.5.1.dmg'
   homepage 'http://www.metakine.com/products/handsoff/'
   version '1.5.1'
-  content_length '6204375'
   sha1 '6738476c53f73a4924fa38444c5802250b180d4f'
 end
diff --git a/Casks/i-stumbler.rb b/Casks/i-stumbler.rb
index faff9e2ef..d768e7bc6 100644
--- a/Casks/i-stumbler.rb
+++ b/Casks/i-stumbler.rb
@@ -2,6 +2,5 @@ class IStumbler < Cask
   url 'http://istumbler.net/downloads/istumbler-99.zip'
   homepage 'http://istumbler.net/'
   version '99'
-  content_length '1146584'
   sha1 '9dfdee3cc1405c4c01417ac0423473142c9b55c9'
 end
diff --git a/Casks/inkscape.rb b/Casks/inkscape.rb
index 07c3b4e27..55f2b9ad3 100644
--- a/Casks/inkscape.rb
+++ b/Casks/inkscape.rb
@@ -1,7 +1,6 @@
 class Inkscape < Cask
   homepage 'http://inkscape.org'
   url 'http://downloads.sourceforge.net/inkscape/Inkscape-0.48.2-1-SNOWLEOPARD.dmg'
-  content_length '87079397'
   version '0.48.2-1'
   sha1 '20073844e26dc787da04d951e3a24338758e5e8d'
 end
diff --git a/Casks/intellij-community.rb b/Casks/intellij-community.rb
index b0cea5e9f..43336e24b 100644
--- a/Casks/intellij-community.rb
+++ b/Casks/intellij-community.rb
@@ -2,6 +2,5 @@ class IntellijCommunity < Cask
   url 'http://download.jetbrains.com/idea/ideaIC-12.0.dmg'
   homepage 'https://www.jetbrains.com/idea/index.html'
   version '12.0'
-  content_length '115776432'
   sha1 'de12b3c6d6a973e02f81d58ff4fc5fb3202e697c'
 end
diff --git a/Casks/intellij-ultimate.rb b/Casks/intellij-ultimate.rb
index 03f244f55..5022d28f7 100644
--- a/Casks/intellij-ultimate.rb
+++ b/Casks/intellij-ultimate.rb
@@ -2,6 +2,5 @@ class IntellijUltimate < Cask
   url 'http://download.jetbrains.com/idea/ideaIU-12.0.dmg'
   homepage 'https://www.jetbrains.com/idea/index.html'
   version '12.0'
-  content_length '209034753'
   sha1 '5d3150ac7e5b2a4754f646f8560918bec3adcdeb'
 end
diff --git a/Casks/irip.rb b/Casks/irip.rb
index 5392bbb78..4b3545473 100644
--- a/Casks/irip.rb
+++ b/Casks/irip.rb
@@ -2,6 +2,5 @@ class Irip < Cask
   url 'http://files.thelittleappfactory.com/iRip2/iRip.zip'
   version 'latest'
   homepage 'http://thelittleappfactory.com/irip/'
-  content_length '2085303'
   no_checksum
 end
diff --git a/Casks/istat-menus.rb b/Casks/istat-menus.rb
index b8e1b47ea..372dd44ec 100644
--- a/Casks/istat-menus.rb
+++ b/Casks/istat-menus.rb
@@ -2,6 +2,5 @@ class IstatMenus < Cask
   url 'http://s3.amazonaws.com/bjango/files/istatmenus4/istatmenus4.03.zip'
   homepage 'http://bjango.com/mac/istatmenus/'
   version '4.03'
-  content_length '15127450'
   sha1 'f31fa1f9ad353c7df248d029666ab74fed9b1531'
 end
diff --git a/Casks/jumpcut.rb b/Casks/jumpcut.rb
index 93f3b8625..822fe2204 100644
--- a/Casks/jumpcut.rb
+++ b/Casks/jumpcut.rb
@@ -2,7 +2,6 @@ class Jumpcut < Cask
   url 'http://downloads.sourceforge.net/project/jumpcut/jumpcut/0.63/Jumpcut_0.63.tgz'
   homepage 'http://jumpcut.sourceforge.net/'
   version '0.63'
-  content_length '530939'
   sha1 '6ac88694f84b549f87c7c20bbf028f1d174d9e40'
 end
 
diff --git a/Casks/justlooking.rb b/Casks/justlooking.rb
index 878f3b7e6..1984c6f42 100644
--- a/Casks/justlooking.rb
+++ b/Casks/justlooking.rb
@@ -2,6 +2,5 @@ class Justlooking < Cask
   url 'http://chipmunkninja.com/download/JustLooking-3.3.3.dmg'
   homepage 'http://chipmunkninja.com/JustLooking'
   version '3.3.3'
-  content_length '4849204'
   sha1 'ac082882d21e77c5c77e99f8fa7bae9f72bac75c'
 end
diff --git a/Casks/keepass-x.rb b/Casks/keepass-x.rb
index 2c8e1feb4..1184dd07d 100644
--- a/Casks/keepass-x.rb
+++ b/Casks/keepass-x.rb
@@ -2,6 +2,5 @@ class KeepassX < Cask
   url 'http://downloads.sourceforge.net/keepassx/KeePassX-0.4.3.dmg'
   homepage 'http://www.keepassx.org'
   version '0.4.3'
-  content_length '13423385'
   sha1 '40f61b33f559f1de61e698b9f46b65c985a98955'
 end
diff --git a/Casks/keka.rb b/Casks/keka.rb
index c4794efb4..7b2cec2e4 100644
--- a/Casks/keka.rb
+++ b/Casks/keka.rb
@@ -2,6 +2,5 @@ class Keka < Cask
   url 'http://www.kekaosx.com/release/Keka-1.0.3-intel.dmg'
   homepage 'http://kekaosx.com/'
   version '1.0.3'
-  content_length '16001364'
   sha1 '80ef6d5cd65a8c5e8ec8e29478ee1013b79a9aa0'
 end
diff --git a/Casks/keyboard-maestro.rb b/Casks/keyboard-maestro.rb
index dac9a489a..1181d3d1e 100644
--- a/Casks/keyboard-maestro.rb
+++ b/Casks/keyboard-maestro.rb
@@ -2,6 +2,5 @@ class KeyboardMaestro < Cask
   url 'http://www.keyboardmaestro.com/action/download?km-kmi-2-b'
   homepage 'http://www.keyboardmaestro.com/'
   version 'latest'
-  content_length '19842748'
   no_checksum
 end
diff --git a/Casks/libre-office.rb b/Casks/libre-office.rb
index f7cad5398..a958c1b94 100644
--- a/Casks/libre-office.rb
+++ b/Casks/libre-office.rb
@@ -2,6 +2,5 @@ class LibreOffice < Cask
   url 'http://download.documentfoundation.org/libreoffice/stable/3.6.5/mac/x86/LibO_3.6.5_MacOS_x86_install_en-US.dmg'
   homepage 'http://www.libreoffice.org/'
   version '3.6.5'
-  content_length '179572795'
   sha1 'dd976dd18118dea876898de6a1236b63d646f0da'
 end
diff --git a/Casks/lime-chat.rb b/Casks/lime-chat.rb
index 32eee8062..850f10ff8 100644
--- a/Casks/lime-chat.rb
+++ b/Casks/lime-chat.rb
@@ -2,6 +2,5 @@ class LimeChat < Cask
   url 'http://cloud.github.com/downloads/psychs/limechat/LimeChat_2.33a.tbz'
   homepage 'http://limechat.net/mac/'
   version '2.33a'
-  content_length '2424344'
   sha1 'c1ee6f02cda8e5d6b7ab104e461d1cc1b73b89bf'
 end
diff --git a/Casks/little-snitch.rb b/Casks/little-snitch.rb
index bfff94cc8..f0dfaa6f2 100644
--- a/Casks/little-snitch.rb
+++ b/Casks/little-snitch.rb
@@ -2,6 +2,5 @@ class LittleSnitch < Cask
   url 'http://www.obdev.at/downloads/LittleSnitch/LittleSnitch-2.5.4.dmg'
   homepage 'http://www.obdev.at/products/littlesnitch/index.html'
   version '2.5.4'
-  content_length '3133956'
   sha1 '217a83098c1eb3df69560e539d86ef4bc6b3b756'
 end
diff --git a/Casks/livestation.rb b/Casks/livestation.rb
index 76f105a77..1e2468e3f 100644
--- a/Casks/livestation.rb
+++ b/Casks/livestation.rb
@@ -2,6 +2,5 @@ class Livestation < Cask
   url 'http://updates.livestation.com/releases/Livestation-3.2.0-intel.dmg'
   homepage 'http://www.livestation.com'
   version '3.2.0'
-  content_length '34333657'
   sha1 '7c3334e2c710d8c89bfc91591ffed56c1b74643c'
 end
diff --git a/Casks/macvim.rb b/Casks/macvim.rb
index f9ccc0607..f191d2ce6 100644
--- a/Casks/macvim.rb
+++ b/Casks/macvim.rb
@@ -2,6 +2,5 @@ class Macvim < Cask
   url 'https://github.com/downloads/b4winckler/macvim/MacVim-snapshot-65.tbz'
   homepage 'http://code.google.com/p/macvim/'
   version '7.3-65'
-  content_length '7215380'
   sha1 '30f58b03127a7b5f9e2c23fd31d3749e8f3e2197'
 end
diff --git a/Casks/makemkv.rb b/Casks/makemkv.rb
index c2aa7058d..f5ea2f95b 100644
--- a/Casks/makemkv.rb
+++ b/Casks/makemkv.rb
@@ -2,5 +2,4 @@ class Makemkv < Cask
   url 'http://www.makemkv.com/download/makemkv_v1.7.8_osx.dmg'
   homepage 'http://www.makemkv.com/'
   version '1.7.8'
-  content_length '6357149'
 end
diff --git a/Casks/menu-bar-filter.rb b/Casks/menu-bar-filter.rb
index 889e57373..85c26f748 100644
--- a/Casks/menu-bar-filter.rb
+++ b/Casks/menu-bar-filter.rb
@@ -2,6 +2,5 @@ class MenuBarFilter < Cask
   url 'https://github.com/downloads/wez/MenuBarFilter/MenuBarFilter_1.2.2.zip'
   homepage 'http://wez.github.com/MenuBarFilter/'
   version '1.2.2'
-  content_length '501304'
   sha1 'aecadf43bdba901e254012cc21e746f39f244bd8'
 end
diff --git a/Casks/miro-video-converter.rb b/Casks/miro-video-converter.rb
index ec2dbbf27..7c4df6ace 100644
--- a/Casks/miro-video-converter.rb
+++ b/Casks/miro-video-converter.rb
@@ -2,6 +2,5 @@ class MiroVideoConverter < Cask
   url 'http://ftp.osuosl.org/pub/pculture.org/mirovideoconverter/mac/Miro%20Video%20Converter.dmg'
   homepage 'http://www.mirovideoconverter.com/'
   version '3.0'
-  content_length '44143528'
   sha1 '85f6be5fd55510e9deeffb5680e28352aaa0073e'
 end
diff --git a/Casks/miro.rb b/Casks/miro.rb
index 4240c02ed..605e67fca 100644
--- a/Casks/miro.rb
+++ b/Casks/miro.rb
@@ -2,6 +2,5 @@ class Miro < Cask
   url 'http://ftp.osuosl.org/pub/pculture.org/miro/osx/Miro.dmg'
   homepage 'http://www.getmiro.com/'
   version '5.0.4'
-  content_length '48854473'
   sha1 'e752e6ca859d469ff5f4de88b33ebb0d44329b71'
 end
diff --git a/Casks/moom.rb b/Casks/moom.rb
index 53236a1d4..d8a102ecc 100644
--- a/Casks/moom.rb
+++ b/Casks/moom.rb
@@ -2,6 +2,5 @@ class Moom < Cask
   url 'http://manytricks.com/download/moom'
   homepage 'http://manytricks.com/moom/'
   version 'latest'
-  content_length '6121023'
   no_checksum
 end
diff --git a/Casks/mplayer-osx-extended.rb b/Casks/mplayer-osx-extended.rb
index feb517937..d53b515b4 100644
--- a/Casks/mplayer-osx-extended.rb
+++ b/Casks/mplayer-osx-extended.rb
@@ -2,6 +2,5 @@ class MplayerOsxExtended < Cask
   url 'https://mplayerosxext.googlecode.com/files/MPlayer-OSX-Extended_rev15-test2.zip'
   homepage 'http://www.mplayerosx.ch/'
   version 'rev15-test2'
-  content_length '16199987'
   sha1 'ef13167d15ca93a8f9b31b597d4d6b6314a26425'
 end
diff --git a/Casks/mplayerx.rb b/Casks/mplayerx.rb
index 7c5c99ad6..4efce8f25 100644
--- a/Casks/mplayerx.rb
+++ b/Casks/mplayerx.rb
@@ -2,6 +2,5 @@ class Mplayerx < Cask
   url 'http://mplayerx.googlecode.com/files/MPlayerX-1.0.17.zip'
   homepage 'http://mplayerx.org/'
   version '1.0.17'
-  content_length '34431129'
   sha1 'e26e9c54dca2404eaab881586f04d73de7d9bdc9'
 end
diff --git a/Casks/mu-commander.rb b/Casks/mu-commander.rb
index b1a72899a..0c3a798f6 100644
--- a/Casks/mu-commander.rb
+++ b/Casks/mu-commander.rb
@@ -2,5 +2,4 @@ class MuCommander < Cask
   url 'http://www.mucommander.com/download/mucommander-0_9_0.dmg'
   version '0.9.0'
   homepage 'http://www.mucommander.com/index.php'
-  content_length '4673174'
 end
diff --git a/Casks/name-changer.rb b/Casks/name-changer.rb
index a81a18386..146e85713 100644
--- a/Casks/name-changer.rb
+++ b/Casks/name-changer.rb
@@ -2,6 +2,5 @@ class NameChanger < Cask
   url 'http://www.mrrsoftware.com/Downloads/NameChanger/Updates/NameChanger-2_3_3.zip'
   homepage 'http://www.mrrsoftware.com/MRRSoftware/NameChanger.html'
   version '2.3.3'
-  content_length '2065341'
   sha1 'b9af8add259a0055a3748aeddfd56984a82cb6f2'
 end
diff --git a/Casks/namemangler.rb b/Casks/namemangler.rb
index 560e145ce..460e84ba0 100644
--- a/Casks/namemangler.rb
+++ b/Casks/namemangler.rb
@@ -2,6 +2,5 @@ class Namemangler < Cask
   url 'http://manytricks.com/download/namemangler'
   version 'latest'
   homepage 'http://manytricks.com/namemangler/'
-  content_length '1614684'
   no_checksum
 end
diff --git a/Casks/net-spot.rb b/Casks/net-spot.rb
index 2cf5ed1f9..153a11978 100644
--- a/Casks/net-spot.rb
+++ b/Casks/net-spot.rb
@@ -2,6 +2,5 @@ class NetSpot < Cask
   url 'http://www.netspotapp.com/download/NetSpot.dmg'
   homepage 'http://www.netspotapp.com'
   version '2.0.274'
-  content_length '6139845'
   sha1 'a3612be873813c1205446395fc4123e07dc8f9a8'
 end
diff --git a/Casks/notational-velocity.rb b/Casks/notational-velocity.rb
index 497b40620..be01ae108 100644
--- a/Casks/notational-velocity.rb
+++ b/Casks/notational-velocity.rb
@@ -2,6 +2,5 @@ class NotationalVelocity < Cask
   url 'http://notational.net/NotationalVelocity.zip'
   homepage 'http://notational.net'
   version 'latest'
-  content_length '2550864'
   no_checksum
 end
diff --git a/Casks/nv-alt.rb b/Casks/nv-alt.rb
index 06c84f93d..af31af294 100644
--- a/Casks/nv-alt.rb
+++ b/Casks/nv-alt.rb
@@ -2,6 +2,5 @@ class NvAlt < Cask
   url 'http://abyss.designheresy.com/nvaltb/files/nvalt2.2b101.zip'
   homepage 'http://brettterpstra.com/project/nvalt/'
   version '2.2b101'
-  content_length '3137385'
   sha1 'f31fa6ea90a6d551a905d5dcd9ee65461d788c38'
 end
diff --git a/Casks/one-password.rb b/Casks/one-password.rb
index 32b51833e..67c26bff9 100644
--- a/Casks/one-password.rb
+++ b/Casks/one-password.rb
@@ -2,6 +2,5 @@ class OnePassword < Cask
   url 'https://d13itkw33a7sus.cloudfront.net/dist/1P/mac/1Password-3.8.20.zip'
   homepage 'https://agilebits.com/onepassword'
   version '3.8.20'
-  content_length '19241282'
   sha1 'b8aaa60f32c0431a95347b8fb4e814472e89bb2b'
 end
diff --git a/Casks/open-office.rb b/Casks/open-office.rb
index 8ad6bcdc8..0e93d0807 100644
--- a/Casks/open-office.rb
+++ b/Casks/open-office.rb
@@ -2,7 +2,6 @@ class OpenOffice < Cask
   url 'http://sourceforge.net/projects/openofficeorg.mirror/files/stable/3.4.1/Apache_OpenOffice_incubating_3.4.1_MacOS_x86_install_en-US.dmg/download'
   homepage 'http://www.openoffice.org/'
   version '3.4.1'
-  content_length '166683054'
   sha1 '63623a1cc77bfc3c0fe207c317ecd087eded3016'
 end
 
diff --git a/Casks/optimal-layout.rb b/Casks/optimal-layout.rb
index fe021f92d..f2f357f25 100644
--- a/Casks/optimal-layout.rb
+++ b/Casks/optimal-layout.rb
@@ -2,6 +2,5 @@ class OptimalLayout < Cask
   url 'http://files.windowflow.com/OptimalLayout2.zip'
   homepage 'http://most-advantageous.com/optimal-layout/'
   version '2.2.3'
-  content_length '2128101'
   sha256 '333593deeab0612a0e8b14c06f2bb2b5468c9b1137b8448b85cba0abfd9df350'
 end
diff --git a/Casks/paintbrush.rb b/Casks/paintbrush.rb
index ff54b0818..3c25e2c43 100644
--- a/Casks/paintbrush.rb
+++ b/Casks/paintbrush.rb
@@ -2,6 +2,5 @@ class Paintbrush < Cask
   url 'http://downloads.sourceforge.net/project/paintbrush/Paintbrush%202.x/Paintbrush%202.1.1/Paintbrush-2.1.1.zip?r=http%3A%2F%2Fpaintbrush.sourceforge.net%2Fdownloads%2F&ts=1351154031&use_mirror=superb-dca2'
   homepage 'http://paintbrush.sourceforge.net/'
   version '2.1.1'
-  content_length '1563534'
   sha1 'f8dedc7b22ed017dea43d76b5686b226ebe13ef2'
 end
diff --git a/Casks/pandora-jam.rb b/Casks/pandora-jam.rb
index cba2f33b8..faf199fd9 100644
--- a/Casks/pandora-jam.rb
+++ b/Casks/pandora-jam.rb
@@ -2,6 +2,5 @@ class PandoraJam < Cask
   url 'http://www.bitcartel.com/downloads/pandorajam.zip'
   homepage 'http://www.bitcartel.com/pandorajam/'
   version 'latest'
-  content_length '5366519'
   no_checksum
 end
diff --git a/Casks/paparazzi.rb b/Casks/paparazzi.rb
index ae30ffa12..7f1cb01ec 100644
--- a/Casks/paparazzi.rb
+++ b/Casks/paparazzi.rb
@@ -2,6 +2,5 @@ class Paparazzi < Cask
   url 'http://derailer.org/paparazzi/Paparazzi!%200.6.5.dmg'
   homepage 'http://derailer.org/paparazzi/'
   version '0.6.5'
-  content_length '3920031'
   sha1 '3f7e7f0cd6fc498c04a0122f75e8874b7c69bbf7'
 end
diff --git a/Casks/picard.rb b/Casks/picard.rb
index a34458b22..406ad32af 100644
--- a/Casks/picard.rb
+++ b/Casks/picard.rb
@@ -2,6 +2,5 @@ class Picard < Cask
   url 'ftp://ftp.musicbrainz.org/pub/musicbrainz/picard/MusicBrainz-Picard-1.1.dmg'
   homepage 'http://musicbrainz.org/doc/MusicBrainz_Picard'
   version '1.1'
-  content_length '16060349'
   sha1 '6dff070ac02541b90f6ced710397bea029c1fc3f'
 end
diff --git a/Casks/pixen.rb b/Casks/pixen.rb
index 6939adf91..8473bf05d 100644
--- a/Casks/pixen.rb
+++ b/Casks/pixen.rb
@@ -2,6 +2,5 @@ class Pixen < Cask
   url 'http://www.mattrajca.com/assets/files/Pixen_3_5_10b1.zip'
   homepage 'http://pixenapp.com/'
   version '3.5.10b1'
-  content_length '3292038'
   sha1 'a2a0f9be3e658abbe551db2250cc0d152977d2c1'
 end
diff --git a/Casks/plex-media-server.rb b/Casks/plex-media-server.rb
index c56067b8e..92fe51b6b 100644
--- a/Casks/plex-media-server.rb
+++ b/Casks/plex-media-server.rb
@@ -3,5 +3,4 @@ class PlexMediaServer < Cask
   homepage 'http://plexapp.com'
   version '0.9.7.9.375'
   sha1 'c62657773f71203e64d92cb951f4d5825286d360'
-  content_length '94099579'
 end
diff --git a/Casks/plex.rb b/Casks/plex.rb
index c8c2ff11c..99fcb854d 100644
--- a/Casks/plex.rb
+++ b/Casks/plex.rb
@@ -2,6 +2,5 @@ class Plex < Cask
   url 'http://plex-downloads.s3.amazonaws.com/plex-laika/0.9.5.4/Plex-0.9.5.4-973998f.zip'
   homepage 'http://plexapp.com'
   version '0.9.5.4'
-  content_length '35884558'
   sha1 '6d544de6c56861eab05a5621ecee1777cefe49fc'
 end
diff --git a/Casks/postgres.rb b/Casks/postgres.rb
index 42fd6f002..c1c73ca32 100644
--- a/Casks/postgres.rb
+++ b/Casks/postgres.rb
@@ -2,6 +2,5 @@ class Postgres < Cask
   url 'http://postgresapp.com/download'
   homepage 'http://www.postgresapp.com/'
   version 'latest'
-  content_length '58088683'
   no_checksum
 end
diff --git a/Casks/propane.rb b/Casks/propane.rb
index 75d4d5053..902a66732 100644
--- a/Casks/propane.rb
+++ b/Casks/propane.rb
@@ -2,6 +2,5 @@ class Propane < Cask
   url 'http://propaneapp.com/appcast/Propane.zip'
   homepage 'http://propaneapp.com/'
   version 'latest'
-  content_length '2840383'
   no_checksum
 end
diff --git a/Casks/quicksilver.rb b/Casks/quicksilver.rb
index c28551f8b..85f873ee2 100644
--- a/Casks/quicksilver.rb
+++ b/Casks/quicksilver.rb
@@ -2,6 +2,5 @@ class Quicksilver < Cask
   url 'http://qs0.qsapp.com/plugins/download.php'
   homepage 'http://qsapp.com/'
   version 'latest'
-  content_length '3473822'
   no_checksum
 end
diff --git a/Casks/racket.rb b/Casks/racket.rb
index 3851a3628..2e9dfe193 100644
--- a/Casks/racket.rb
+++ b/Casks/racket.rb
@@ -2,6 +2,5 @@ class Racket < Cask
   url 'http://download.racket-lang.org/installers/5.3/racket/racket-5.3-bin-x86_64-osx-mac.dmg'
   homepage 'http://racket-lang.org/'
   version '5.3'
-  content_length '66712297'
   sha1 'da2642f5cebb16e7098b00988627ee6c45f5edc8'
 end
diff --git a/Casks/rdio.rb b/Casks/rdio.rb
index 0a273796e..f2af63f4b 100644
--- a/Casks/rdio.rb
+++ b/Casks/rdio.rb
@@ -2,6 +2,5 @@ class Rdio < Cask
   url 'http://www.rdio.com/media/static/desktop/mac/Rdio.dmg'
   homepage 'http://www.rdio.com'
   version 'latest'
-  content_length '19387328'
   no_checksum
 end
diff --git a/Casks/ringtones.rb b/Casks/ringtones.rb
index 9570cfeb8..881326247 100644
--- a/Casks/ringtones.rb
+++ b/Casks/ringtones.rb
@@ -2,6 +2,5 @@ class Ringtones < Cask
   url 'http://files.thelittleappfactory.com/ringtones/Ringtones.zip'
   version 'latest'
   homepage 'http://thelittleappfactory.com/ringtones/'
-  content_length '2519864'
   no_checksum
 end
diff --git a/Casks/ripit.rb b/Casks/ripit.rb
index 3484324b7..1161660f8 100644
--- a/Casks/ripit.rb
+++ b/Casks/ripit.rb
@@ -1,7 +1,6 @@
 class Ripit < Cask
   url 'http://files.thelittleappfactory.com/ripit/RipIt.zip'
   homepage 'http://thelittleappfactory.com/ripit/'
-  content_length '8926510'
   version 'latest'
   no_checksum
 end
diff --git a/Casks/rubymine.rb b/Casks/rubymine.rb
index 3d8c2b0a9..2eb992c26 100644
--- a/Casks/rubymine.rb
+++ b/Casks/rubymine.rb
@@ -2,6 +2,5 @@ class Rubymine < Cask
   url 'http://download.jetbrains.com/ruby/RubyMine-4.5.4.dmg'
   homepage 'http://www.jetbrains.com/ruby/'
   version '4.5.4'
-  content_length '111025727'
   sha1 '3f5d4318207f8e1a661a1055089eed63473bbfb3'
 end
diff --git a/Casks/scrivener.rb b/Casks/scrivener.rb
index 57d7bdfe3..43ca96e1d 100644
--- a/Casks/scrivener.rb
+++ b/Casks/scrivener.rb
@@ -2,6 +2,5 @@ class Scrivener < Cask
   url 'http://scrivener.s3.amazonaws.com/Scrivener.dmg'
   homepage 'http://literatureandlatte.com/scrivener.php'
   version 'latest'
-  content_length '31888086'
   no_checksum
 end
diff --git a/Casks/seashore.rb b/Casks/seashore.rb
index 720ef5caa..73b5c79c8 100644
--- a/Casks/seashore.rb
+++ b/Casks/seashore.rb
@@ -2,6 +2,5 @@ class Seashore < Cask
   url 'https://sourceforge.net/projects/seashore/files/seashore%20binaries/Seashore%200.5.1/Seashore.zip/download'
   homepage 'http://seashore.sourceforge.net/'
   version '0.5.1'
-  content_length '6957082'
   sha1 'd8661189b4e526fbb9c73602a77c0c5936eb5297'
 end
diff --git a/Casks/shortcat.rb b/Casks/shortcat.rb
index 9c43237e0..27872e277 100644
--- a/Casks/shortcat.rb
+++ b/Casks/shortcat.rb
@@ -2,6 +2,5 @@ class Shortcat < Cask
   url 'http://updates.shortcatapp.com/v0.3.8/Shortcat.app.zip'
   homepage 'http://shortcatapp.com/'
   version '0.3.8'
-  content_length '7153088'
   sha1 '98eab26622ae417e75d8239b2eb63bfea1c7b20c'
 end
diff --git a/Casks/sigil.rb b/Casks/sigil.rb
index ec530feef..5d4d52f0b 100644
--- a/Casks/sigil.rb
+++ b/Casks/sigil.rb
@@ -2,6 +2,5 @@ class Sigil < Cask
   url 'http://sigil.googlecode.com/files/Sigil-0.6.2-Mac-Package.dmg'
   homepage 'http://code.google.com/p/sigil/'
   version '0.6.2'
-  content_length '28322867'
   sha1 '4fe9d60e6a5f2809f2311494e906c72d6fef0755'
 end
diff --git a/Casks/simple-comic.rb b/Casks/simple-comic.rb
index 241c142b0..37154fb3b 100644
--- a/Casks/simple-comic.rb
+++ b/Casks/simple-comic.rb
@@ -2,6 +2,5 @@ class SimpleComic < Cask
   url 'http://dancingtortoisedownload.s3.amazonaws.com/SimpleComic_1.7_252.zip'
   homepage 'http://dancingtortoise.com/simplecomic/'
   version '1.7.252'
-  content_length '3151321'
   sha1 'c8efa6078ce2691b7dddf2b3b7b808f65cead227'
 end
diff --git a/Casks/size-up.rb b/Casks/size-up.rb
index 49d689a0d..d7c18a23e 100644
--- a/Casks/size-up.rb
+++ b/Casks/size-up.rb
@@ -2,6 +2,5 @@ class SizeUp < Cask
   url 'http://www.irradiatedsoftware.com/download/SizeUp.zip'
   homepage 'http://www.irradiatedsoftware.com/sizeup/index.html'
   version '1.3.2'
-  content_length '1986416'
   sha1 'c26dea7e3341e1467ff08768c9ce8bf53216de6b'
 end
diff --git a/Casks/skype.rb b/Casks/skype.rb
index e5287b008..4ec4d661d 100644
--- a/Casks/skype.rb
+++ b/Casks/skype.rb
@@ -2,6 +2,5 @@ class Skype < Cask
   homepage 'http://www.skype.com'
   version '6.1.0.2295'
   url 'http://download.skype.com/macosx/Skype_6.1.0.2295.dmg'
-  content_length '38875054'
   sha1 'c19b0c2c4121c30c9eec0ad929f5d372459b6698'
 end
diff --git a/Casks/slate.rb b/Casks/slate.rb
index bfb3893f2..e6e7e3fbe 100644
--- a/Casks/slate.rb
+++ b/Casks/slate.rb
@@ -2,6 +2,5 @@ class Slate < Cask
   url 'http://slate.ninjamonkeysoftware.com/Slate.dmg'
   homepage 'https://github.com/jigish/slate'
   version 'latest'
-  content_length '1431469'
   no_checksum
 end
diff --git a/Casks/sourcetree.rb b/Casks/sourcetree.rb
index fabbe4385..d27ae74a4 100644
--- a/Casks/sourcetree.rb
+++ b/Casks/sourcetree.rb
@@ -2,6 +2,5 @@ class Sourcetree < Cask
   url 'http://downloads.atlassian.com/software/sourcetree/SourceTree_1.5.7.1.dmg'
   homepage 'http://www.sourcetreeapp.com/'
   version '1.5.7.1'
-  content_length '23871155'
   sha1 'f3cda927b68beb86015b01ad9a85842139287559'
 end
diff --git a/Casks/sparrow.rb b/Casks/sparrow.rb
index cd9a62cbc..c2e2877ee 100644
--- a/Casks/sparrow.rb
+++ b/Casks/sparrow.rb
@@ -2,6 +2,5 @@ class Sparrow < Cask
   url 'http://download.sparrowmailapp.com/appcast/Sparrow-latest.dmg'
   homepage 'http://www.sparrowmailapp.com/'
   version 'latest'
-  content_length '12139098'
   no_checksum
 end
diff --git a/Casks/spectacle.rb b/Casks/spectacle.rb
index 59c2f174c..ad210ba68 100644
--- a/Casks/spectacle.rb
+++ b/Casks/spectacle.rb
@@ -2,6 +2,5 @@ class Spectacle < Cask
   url 'http://spectacleapp.com/updates/downloads/Spectacle%200.8.1.zip'
   homepage 'http://www.spectacleapp.com/'
   version '0.8.1'
-  content_length '2654321'
   sha1 'ef0084cf13e127106957d8a26a4e50d608d0f257'
 end
diff --git a/Casks/spotify.rb b/Casks/spotify.rb
index eb3a1af63..edf18cb3d 100644
--- a/Casks/spotify.rb
+++ b/Casks/spotify.rb
@@ -2,6 +2,5 @@ class Spotify < Cask
   url 'http://download.spotify.com/Spotify.dmg'
   homepage 'https://www.spotify.com'
   version 'stable'
-  content_length '25870514'
   no_checksum
 end
diff --git a/Casks/steam.rb b/Casks/steam.rb
index e530a0cf2..d5109ba0c 100644
--- a/Casks/steam.rb
+++ b/Casks/steam.rb
@@ -2,6 +2,5 @@ class Steam < Cask
   url 'http://media.steampowered.com/client/installer/steam.dmg'
   homepage 'http://store.steampowered.com/about/'
   version 'stable'
-  content_length '3265407'
   no_checksum
 end
diff --git a/Casks/sublime-text.rb b/Casks/sublime-text.rb
index 39a330b10..253ded07a 100644
--- a/Casks/sublime-text.rb
+++ b/Casks/sublime-text.rb
@@ -2,6 +2,5 @@ class SublimeText < Cask
   url 'http://c758482.r82.cf2.rackcdn.com/Sublime%20Text%202.0.1.dmg'
   homepage 'http://www.sublimetext.com/2'
   version '2.0.1'
-  content_length '8028400'
   sha1 'b5f91ee4f62d36c0490c021d5fb134b9e7cb3936'
 end
diff --git a/Casks/tagalicious.rb b/Casks/tagalicious.rb
index 4885e7edc..d3b7d18f7 100644
--- a/Casks/tagalicious.rb
+++ b/Casks/tagalicious.rb
@@ -1,7 +1,6 @@
 class Tagalicious < Cask
   url 'http://files.thelittleappfactory.com/tagalicious/Tagalicious.zip'
   homepage 'http://files.thelittleappfactory.com/ringtones/Ringtones.zip'
-  content_length '4685352'
   version 'latest'
   no_checksum
 end
diff --git a/Casks/textmate1.rb b/Casks/textmate1.rb
index ebd104320..5be26027e 100644
--- a/Casks/textmate1.rb
+++ b/Casks/textmate1.rb
@@ -2,6 +2,5 @@ class Textmate1 < Cask
   url 'http://download.macromates.com/TextMate_1.5.11_r1635.zip'
   homepage 'http://macromates.com/'
   version '1.5.11_r1635'
-  content_length '12998020'
   sha1 '41e09022f7f9bd0962e3d7032699064c60d3ae19'
 end
diff --git a/Casks/textmate2.rb b/Casks/textmate2.rb
index 09a00114e..bf9e4d1b2 100644
--- a/Casks/textmate2.rb
+++ b/Casks/textmate2.rb
@@ -2,6 +2,5 @@ class Textmate2 < Cask
   url 'https://github.com/downloads/textmate/textmate/TextMate_r9359.tbz'
   homepage 'http://macromates.com/'
   version '2.0_r9359'
-  content_length '14470888'
   sha1 'f4a2c070e33c863989d821ebc1babd21f343bef7'
 end
diff --git a/Casks/textwrangler.rb b/Casks/textwrangler.rb
index f04476901..70ee2bd31 100644
--- a/Casks/textwrangler.rb
+++ b/Casks/textwrangler.rb
@@ -2,6 +2,5 @@ class Textwrangler < Cask
   url 'http://ash.barebones.com/TextWrangler_4.0.1.dmg'
   homepage 'http://www.barebones.com/products/textwrangler'
   version '4.0.1'
-  content_length '5419888'
   sha1 '7205c48f94d588682bf82923b579e1674701f218'
 end
diff --git a/Casks/thunderbird.rb b/Casks/thunderbird.rb
index b928ea583..c1b3b8750 100644
--- a/Casks/thunderbird.rb
+++ b/Casks/thunderbird.rb
@@ -2,7 +2,6 @@ class Thunderbird < Cask
   url 'http://download.cdn.mozilla.net/pub/mozilla.org/thunderbird/releases/17.0.3esr/mac/en-US/Thunderbird%2017.0.3esr.dmg'
   homepage 'http://www.mozilla.org/en-US/thunderbird/'
   version '17.0.3esr'
-  content_length '37475872'
   # http://download.cdn.mozilla.net/pub/mozilla.org/thunderbird/releases/17.0.3esr/SHA1SUMS
   sha1 '67805f04011db557f3df967e6d3afdcfdb9cd839'
 end
diff --git a/Casks/time-machine-editor.rb b/Casks/time-machine-editor.rb
index e51cdfeb2..8a733c68a 100644
--- a/Casks/time-machine-editor.rb
+++ b/Casks/time-machine-editor.rb
@@ -2,6 +2,5 @@ class TimeMachineEditor < Cask
   url 'http://timesoftware.free.fr/timemachineeditor/TimeMachineEditor.zip'
   homepage 'http://timesoftware.free.fr/timemachineeditor/'
   version 'latest'
-  content_length '480641'
   no_checksum
 end
diff --git a/Casks/tor-browser-alpha.rb b/Casks/tor-browser-alpha.rb
index e84fd4a1f..9fa8cedda 100644
--- a/Casks/tor-browser-alpha.rb
+++ b/Casks/tor-browser-alpha.rb
@@ -2,6 +2,5 @@ class TorBrowserAlpha < Cask
   homepage 'https://www.torproject.org/projects/torbrowser.html'
   url 'https://www.torproject.org/dist/torbrowser/osx/TorBrowser-2.4.10-alpha-2-osx-x86_64-en-US.zip'
   version '2.4.10-alpha-2'
-  content_length '35469516'
   sha1 'ca8f1a4c68559214c50138a19d7e337ffdc1d331'
 end
diff --git a/Casks/tor-browser.rb b/Casks/tor-browser.rb
index b7e4010cb..2eb6dd7c1 100644
--- a/Casks/tor-browser.rb
+++ b/Casks/tor-browser.rb
@@ -2,6 +2,5 @@ class TorBrowser < Cask
   homepage 'https://www.torproject.org/projects/torbrowser.html'
   url 'https://www.torproject.org/dist/torbrowser/osx/TorBrowser-2.3.25-4-osx-x86_64-en-US.zip'
   version '2.3.25-4'
-  content_length '35275064'
   sha1 '5cb5a5dac27ba40cdaeefd0fdb753e50882a89ec'
 end
diff --git a/Casks/transmission.rb b/Casks/transmission.rb
index 10afcda33..8ae3bbd61 100644
--- a/Casks/transmission.rb
+++ b/Casks/transmission.rb
@@ -2,6 +2,5 @@ class Transmission < Cask
   url 'http://download.transmissionbt.com/files/Transmission-2.76.dmg'
   homepage 'http://www.transmissionbt.com/'
   version '2.76'
-  content_length '5043112'
   sha1 'fb36ca42260a7e234af796fcd7e40cecf49ad6a4'
 end
diff --git a/Casks/transmit.rb b/Casks/transmit.rb
index 7f9a15fe2..3527b3b18 100644
--- a/Casks/transmit.rb
+++ b/Casks/transmit.rb
@@ -2,6 +2,5 @@ class Transmit < Cask
   url 'http://www.panic.com/transmit/d/Transmit%204.2.zip'
   homepage 'http://panic.com/transmit/'
   version '4.2'
-  content_length '29172077'
   sha1 'f49d0471dbf655a8157dcd89d3db47ba2c97be65'
 end
diff --git a/Casks/tunewiki.rb b/Casks/tunewiki.rb
index 0ddc05e10..9d0769fb2 100644
--- a/Casks/tunewiki.rb
+++ b/Casks/tunewiki.rb
@@ -2,6 +2,5 @@ class Tunewiki < Cask
   url 'http://www.tunewiki.com/download/desktop/TuneWiki_Installer.dmg'
   homepage 'http://www.tunewiki.com/'
   version '2.1.0'
-  content_length '563712'
   sha1 '21285dbe39af0dcc7cb9d688bdedc6786d1b6276'
 end
diff --git a/Casks/u-torrent.rb b/Casks/u-torrent.rb
index 01e516693..5a549e461 100644
--- a/Casks/u-torrent.rb
+++ b/Casks/u-torrent.rb
@@ -2,6 +2,5 @@ class UTorrent < Cask
   homepage 'http://www.utorrent.com/'
   version '1.5.14'
   url 'http://download.utorrent.com/1.5.14/uTorrent.dmg'
-  content_length '2690009'
   sha1 '4399d289b7719e4c17b6806d94a68e6aa886d1d1'
 end
diff --git a/Casks/ukelele.rb b/Casks/ukelele.rb
index 6510afed3..bdbc0c15d 100644
--- a/Casks/ukelele.rb
+++ b/Casks/ukelele.rb
@@ -2,6 +2,5 @@ class Ukelele < Cask
   url 'http://scripts.sil.org/cms/scripts/render_download.php?format=file&media_id=Ukelele_2.2.4&filename=Ukelele_2.2.4.dmg'
   homepage 'http://scripts.sil.org/ukelele'
   version '2.2.4'
-  content_length '9788023'
   sha1 'f322ccfbc5b2efb24d0d5cf902dfd0ae552322e5'
 end
diff --git a/Casks/vagrant.rb b/Casks/vagrant.rb
index 885469297..13ce70b50 100644
--- a/Casks/vagrant.rb
+++ b/Casks/vagrant.rb
@@ -2,6 +2,5 @@ class Vagrant < Cask
   url 'http://files.vagrantup.com/packages/476b19a9e5f499b5d0b9d4aba5c0b16ebe434311/Vagrant.dmg'
   homepage 'http://www.vagrantup.com'
   version '1.0.6'
-  content_length '25674666'
   sha256 '30d3cc92c2376ddf940a30f20ae3fa6d8248b83bd4f810a3050217385b03ead0'
 end
diff --git a/Casks/virtualbox.rb b/Casks/virtualbox.rb
index 7a997cef6..73f043de1 100644
--- a/Casks/virtualbox.rb
+++ b/Casks/virtualbox.rb
@@ -2,6 +2,5 @@ class Virtualbox < Cask
   homepage 'http://www.virtualbox.org'
   version '4.2.6.82870'
   url 'http://download.virtualbox.org/virtualbox/4.2.6/VirtualBox-4.2.6-82870-OSX.dmg'
-  content_length '109050921'
   sha1 '7053bba27409cd9fbb661962bc9605bf3ce7002a'
 end
diff --git a/Casks/vlc.rb b/Casks/vlc.rb
index 1a0aeceaf..fbae9783d 100644
--- a/Casks/vlc.rb
+++ b/Casks/vlc.rb
@@ -2,6 +2,5 @@ class Vlc < Cask
   homepage 'http://www.videolan.org/vlc/'
   url 'http://downloads.sourceforge.net/project/vlc/2.0.5/macosx/vlc-2.0.5.dmg'
   version '2.0.5'
-  content_length '43950052'
   sha1 'f2d3b240d012f9de6b5f1042a43dccca2c90a0e4'
 end
diff --git a/Casks/wav-tap.rb b/Casks/wav-tap.rb
index 3ded607cf..089474024 100644
--- a/Casks/wav-tap.rb
+++ b/Casks/wav-tap.rb
@@ -2,6 +2,5 @@ class WavTap < Cask
   url 'https://github.com/downloads/pje/WavTap/WavTap%200.2.0.pkg'
   homepage 'https://github.com/pje/wavtap'
   version '0.2.0'
-  content_length '1139070'
   sha1 '9d71dcf769dd546d66278dc9cbf675df6b006fe6'
 end
diff --git a/Casks/woodhouse.rb b/Casks/woodhouse.rb
index 10f09bd26..3aee9d4ba 100644
--- a/Casks/woodhouse.rb
+++ b/Casks/woodhouse.rb
@@ -1,7 +1,6 @@
 class Woodhouse < Cask
   url 'https://github.com/downloads/phinze/woodhouse/Woodhouse-0.4.0.dmg'
   homepage 'https://github.com/phinze/woodhouse/'
-  content_length '964857'
   version '0.4.0'
   sha1 'cc1f63f6a1d6732d3c223e185b95fcba2ce77418'
 end
diff --git a/Casks/x-quartz.rb b/Casks/x-quartz.rb
index 80a5e0620..6b4323c7f 100644
--- a/Casks/x-quartz.rb
+++ b/Casks/x-quartz.rb
@@ -2,6 +2,5 @@ class XQuartz < Cask
   url 'http://xquartz.macosforge.org/downloads/SL/XQuartz-2.7.4.dmg'
   homepage 'http://xquartz.macosforge.org/'
   version '2.7.4'
-  content_length '70144166'
   sha1 '98b2ca8580046d5b91250c5a244c8182437dc9d7'
 end
diff --git a/Casks/xbmc.rb b/Casks/xbmc.rb
index c95ad764c..bac4e417c 100644
--- a/Casks/xbmc.rb
+++ b/Casks/xbmc.rb
@@ -2,6 +2,5 @@ class Xbmc < Cask
   homepage 'http://xbmc.org/'
   version '12.0.beta.1'
   url 'http://mirrors.xbmc.org/releases/osx/xbmc-12.0-Frodo_beta1-x86_64.dmg'
-  content_length '52627325'
   sha1 '3170629b89adc0bbcb7f4096233deb357d0e65cd'
 end
diff --git a/Casks/xld.rb b/Casks/xld.rb
index 7b2634060..305b9fb29 100644
--- a/Casks/xld.rb
+++ b/Casks/xld.rb
@@ -2,6 +2,5 @@ class Xld < Cask
   url 'http://xld.googlecode.com/files/xld-20130127.dmg'
   homepage 'http://tmkk.undo.jp/xld/index_e.html'
   version '2013-01-27'
-  content_length '6962800'
   sha1 '367949fa230bfe20122ccf27c399bf7953f9a214'
 end
diff --git a/Casks/xscope.rb b/Casks/xscope.rb
index 1f8fa62e6..2c514a700 100644
--- a/Casks/xscope.rb
+++ b/Casks/xscope.rb
@@ -2,6 +2,5 @@ class Xscope < Cask
   url 'http://iconfactory.com/assets/software/xscope/xScope-3.5.1.zip'
   homepage 'http://iconfactory.com/software/xscope'
   version '3.5.1'
-  content_length '25577535'
   sha1 'b355b3aab636ce535d67d8496d2211b4c2589272'
 end
diff --git a/Casks/xtra-finder.rb b/Casks/xtra-finder.rb
index c21011423..91583a57d 100644
--- a/Casks/xtra-finder.rb
+++ b/Casks/xtra-finder.rb
@@ -2,6 +2,5 @@ class XtraFinder < Cask
   url 'http://www.trankynam.com/xtrafinder/downloads/XtraFinder.dmg'
   homepage 'http://www.trankynam.com/xtrafinder/'
   version 'latest'
-  content_length '1870081'
   no_checksum
 end
diff --git a/Casks/zooom.rb b/Casks/zooom.rb
index acf41673d..c5401aef0 100644
--- a/Casks/zooom.rb
+++ b/Casks/zooom.rb
@@ -2,5 +2,4 @@ class Zooom < Cask
   url 'http://software.coderage-software.com/zooom/Zooom_2.5.0.dmg'
   homepage 'http://http://coderage-software.com/zooom'
   version '2.5.0'
-  content_length '3946668'
 end
diff --git a/lib/cask/dsl.rb b/lib/cask/dsl.rb
index 9105d6c26..394358756 100644
--- a/lib/cask/dsl.rb
+++ b/lib/cask/dsl.rb
@@ -5,8 +5,6 @@ module Cask::DSL
     base.extend(ClassMethods)
   end
 
-  def content_length; self.class.content_length; end
-
   def homepage; self.class.homepage; end
 
   def url; self.class.url; end
@@ -17,7 +15,7 @@ module Cask::DSL
 
   module ClassMethods
     def content_length(content_length=nil)
-      @content_length ||= content_length
+      # deprecated, but retained for backwards compatibility
     end
 
     def homepage(homepage=nil)
diff --git a/test/cask/dsl_test.rb b/test/cask/dsl_test.rb
index d0ddf22d2..74d356c47 100644
--- a/test/cask/dsl_test.rb
+++ b/test/cask/dsl_test.rb
@@ -22,4 +22,15 @@ describe Cask::DSL do
       Checksum.new(:sha2, 'imasha2')
     ]
   end
+
+  it "still lets you set content_length even though it is deprecated" do
+    OldContentLengthCask = Class.new(Cask)
+    begin
+      OldContentLengthCask.class_eval do
+        content_length '12345'
+      end
+    rescue Exception => e
+      flunk("expected content_length to work, but got exception #{e}")
+    end
+  end
 end
diff --git a/test/support/Casks/test-cask.rb b/test/support/Casks/test-cask.rb
index 610d1b8da..0d307d46e 100644
--- a/test/support/Casks/test-cask.rb
+++ b/test/support/Casks/test-cask.rb
@@ -2,6 +2,5 @@ class TestCask < Cask
   url 'http://example.com/TestCask.dmg'
   homepage 'http://example.com/'
   version '1.2.3'
-  content_length '123456'
   sha1 '0123456789012345678901234567890123456789'
 end