The natural progression of CSS buttons has now pushed “sprite images” and all that nonsense into the foray of fonts. The result is a much needed UI boost – exemplified in this case by a clever CSS3 Button Set.
When load time is important (and – it almost always is) you can leverage the amazing abilities of font’s and use them to generate the icons that you use most… and for a great deal of us developers, that means “Social Networking Icons”.