I found this neat website called wordle.net. You enter in a block of text and it arranges it so the most commonly used words are bigger than less commonly used words, and then you can mess around with the font, etc. I don't know, it's indoor fun for a super hot day. Here's one I made from an article about Phoenix finding water on Mars. (I'm kind of geeking out about that, I think it's so cool!) If you click on it, it'll take you to the site and you can see a bigger image.