So maybe this is old news, but today I discovered Wordle. Be prepared to lose hours of your day making word clouds of your favorite blogs, sayings, and whatever random text you can find.
I was most impressed with their slick interface for changing just about everying about the layout and design of it, including the ability to exclude words and rearrange with the current settings. Go. Play. Waste time.
Here's one for a bay-area food blog that I contribute to. Apparently we like "good chicken" most of all.
And here's Cartoon Brew: