twitter/bootstrap — pull request #4317 by kurtextrem (2012-08-08 07:38:40+00:00)
Title: Once again: images optimization

Using kraken.io

But this time you can see how much is saved!
Look at this screenshot -> http://prntscr.com/df7l3, not that much but if 1000 websites are using bootstrap with glyphicons and they would have 1000 visitors it would make a totale saving of 635 MB. :)
(665 byte-saving * 1000 websites * 1000 visitors ~= 635 MB)