Bootstrap was going to ditch Glyphicons (and IE7 support) with 2.2.2[1] but it looks like they're either holding off on that or they changed their mind. I recommend using Font Awesome[2] instead of Glyphicons.
[1] http://blog.getbootstrap.com/2012/11/09/glyphicons-font/
We use fontawesome as well, it makes your site look much nicer.
You can also use http://retinajs.com/ to scale stuff up if you want.
Re:Bootstrap 2.2.2 is out
by wiradikusuma on Saturday December 08, 2012 @11:18PM
(#4893769)
Even better, pack your own custom glyphs from icomoon.io.
http://twitter.github.com/bootstrap/base-css.html#icons