Here's a new Web 2.0 tool. Wordle takes text you input and creates a word image based on frequency (similar to a cloud). Here's one I created based on a few of my blog posts.
Cool, but I was wondering how in the world you could use this in class. A few possibilities: Word poems. Analyzing text (others or your own) for key words/themes. For example, input a politician's speech and see what turns up--it could add an interesting element to a presentation.