I can't remember the last time I used a Java applet, and so I couldn't help but post about Wordle, a fun (and perhaps useful) way to spend a few minutes.
The site provides a lot of options for creating word clouds from text or links. The image above is from the site and is created from just entering http://deitte.com. The one annoying part of the site is that I had to use a screen capture program, Bug Shooting, in order to get the image to embed. But you can link to word images you create on their site.
Wordle can also be helpful for surveys or other text from customers to visualize the responses. I found the site via Caren Cioffi at Brightcove through Yammer, and she was using it for this purpose.