A fun processing applet: tree from texone.org. It takes a URL and converts the site, including links and content, into a tree, with external links creating other trees, and thus a forest of information. The trunks reflect a unique color for each domain, and the branches (I believe) represent pages, and leaves are individual bits of tags or content. The image above is the output of this site -- which looks like a few stalks of black broccoli with a touch of blue ink.

A nice example of the power of processing (with more examples in the exhibition). What truly sold me on these guys is that they also did a midi output of this information, and the resulting mp3s (a few sample versions available on the site) are awesome.