The form is a bit hard to use. it would be nice to be able to drag fonts up and down the list until they are in order 1-6. this way I could compare close fonts side by side. it is also harder to read the fonts depending on the position on the screen, so its not a real fair comparison.
A small study into what fonts people find easiest to read. Came from a point of frustration on the lack of valuable discussion around typography on the web. Feedback is very welcome, though I certainly don't recommend looking at the source code :]