Oh, what fun! This totally speaks to the geek in me! This is so super cool and clever, I’ve already spent an hour checking out different sites, testing myself.
Basically, it’s a bookmarklet you put in your browser and go to any other site, click on the bookmarklet and it magically tells you what font it is! Try it, you’ll see how much fun it is! This is the brainchild of a super smart computer science student, Chengyin Liu at the University of Illinois Urbana-Champaign.