If you take this blog’s RSS feed and drop it into Wordle, you get a neat word cloud composed of oft-used words found in the feed’s RSS data. The cloud for Unfiltered looks like this (click to enlarge):
Nice idea for a web app, and good design aspects too.
All you need for Wordle to work is a bunch of straight text or a RSS or ATOM feed from a website or blog. That’s it. More fun than you might imagine.