You can get any size pizza out of it; it will just be thicker crust the smaller the pizza. When I do it on my pizza stone, which is 14", it is very thin; if I want a smaller pizza for any reason, it just ends up being a little thicker.
"If you drop an egg, you don't say, 'Oh, shoot' and drop the other 11, do you?"
-Source unknown, but obviously brilliant
Reached goal 4/16/2010...but kind of afraid to look these days