My coworker and I were just (10 minutes ago) talking about the need for a site like this, so I'm giving the idea a big thumbs-up! We might try it out and offer additional suggestions as we use it.

As others have said, it could use a different design. Specifically, the fonts look kind of strange (letters don't have a consistent height) in my browser (Firefox 3.0 on Linux). Also you might want to streamline the javascript, as it looks like it caused firefox to use a lot more CPU.