Contest to create visualization of firefox usage

Mozilla labs is sponsoring a contest to visualize browser usage data. They're releasing the source data November 17. Here's a lovely example (click to see full-size):

Visual Candy: Chart of Taxonomy of Rap Names

I love the choice of main groups: Wordplay, Physical and Metaphysical Characteristics, Crime, Titles/Honorifics, Alphanumeric, and Animal, Vegetable, Mineral. The subcategories are delightful too: audacious misspellings, similarity to cartoon character. In order to make it legible though, some connections have to be left out. For instance Brand Nubian gets to be connected to the Black and Fresh taxa, but not to Wordplay.