A Co-Pastor at our church has a blog "More than Sunday". Today he referenced an online program called Wordle. http://www.wordle.net/. It analyzes words in documents and turns them into an image, with high frequency words depicted in larger font.
You can read his blog at http://www.pastorjohnnya.blogspot.com/
Here are my Wordles for this blog. I must use the word "like" a lot.
Go to www.wordle.net if you would like to try it. (Don't forget to eat !)