A lot of people have made word clouds to help illustrate important words in a group of words, whether it's from a story or "brainstorm." I have looked at Wordle.net and Tagxedo.com to create in the past, but recently came across Tagul.com. I liked the fact that you could embed the cloud on your webpage with words being interactive links. Here is a quick cloud I made using text from this blog, and a little bit of tweaking.
I don't know which you like the most, but Tagul does do some neat stuff. Give it a try.