Bruce Herr and Todd Holloway created a visualization of the popularity of Wikipedia articles. They started with a very large node map of the articles, then sorted out the articles that have been most frequently edited by users. The more frequently edited articles are larger dots of darker color. What really got my attention was Todd Holloway's statement that he is working on a project that will change the labels of google map data based on the zoom level a user has chosen. I can't wait to see that in action (and hear how he does it).

The article is located here.