Wordle is a great service which will take an RSS feed from your site (or anybody else’s site) and convert it to an image. Larger words are found more often, smaller words are found less.
Here are a couple of examples.
From our very own blog (http://www.merrellgroup.com/blog/feed/):
And from my personal site (http://www.joshuarcraig.net/feed/):
Go try it out for yourself!
