Twitter-Based Mashup

Here's an interesting site: Geochirp.com. See what people are tweeting about in a user-defined radius of your location. Examples: I just searched on "Evernote" (my latest toy) in a 50-mile radius, which includes Washington, DC. Other good search terms, picked out of the air, for no particular reason: "Pelosi", "swastika", "flowers", "butterflies", "socialism", ...