Nice execution. I drew up a site exactly like this about a year and a half ago, but never got around to building it. One less thing I have to build. :)
When this happens part of me goes "Nooo!! I could have done that!" and another part goes "Sweet!! Now I don't have to build it!" It's hard to get the two parts to settled back down though.
I love that feeling. I want success, but I'm more motivated by the prospect of making something that I want. When I see something I could have made, I write the guy who made it, congratulate him, and talk with him a bit, because I've just found somebody who might make a good friend. Then I get on to working on another madcap adventure.
This would basically allow previewing how specific text would look like in a variety of types and sizes .. which is a bit more practical than "A way to explore the popular typefaces you have on your computer" as stated in FAQ.
