Pictos Icon Font Server
pictos.cc
pictos.cc
I like the idea: kind of an extension of sprites to using the font file as the sprite holder; not sure if that's any more efficient though due to the cross-browser issues of webfonts.
So so just like characters in a font, the icons can use the same text effects like any other text, like size, coloring, gradients, text-shadows and etc, which can save you a lot of time and maybe bandwidth too.
We used Pictos fontset on our RailsRumble app (http://splendidbacon.com) a while back and it was much better and faster experience for me, than building the different icon colors & sizes in Photoshop like usually.
The one problem that I have with pictograms-as-fonts is anti-aliasing. The designers that I work with spend hours to make their icons absolutely perfect at every pixel size that they'll be displayed at. This is particularly visible when the icon has horizontal or vertical lines. Most of the time you'll want them have a hard edge, and with anti-aliasing you can never be sure you'll get that result.
This will change in a few years when all our screens have high pixel densities, but for the time being I'm sticking with PNG sprites, with hand-tweeked pixels.
-webkit-font-smoothing: antialiased;
only works in webkit, which is most all mobile and chrome/safari.
If you want to serve them yourself, that option is there as well. Thanks!!