Have you heard of Wordle.net? In the site’s own words:
“Wordle is a yot for generating ‘word clouds’ from text that you provide. The clouds give greater prominence to words that appear more frequently in the source text. You can tweak your clouds with different fonts, layouts, and color schemes. The images you create with Wordle are yours to use however you like. You can print them out, or save them to the Wordle gallery to share with your friends.”
Using this site is highly distracting, but so much fun! Here are my two self-published books and current NaNoWriMo novel-in-progress as seen through Wordle:
QUEER GREER (2009)
CHOICE (2009)
VUTO (NaNoWriMo 2011)