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OSM 2008: A Year of Edits from ItoWorld on Vimeo.
Via Ben Fry come this video shoing a time-lapse of all the edits for the OpenStreetMap project for 2008.

OpenStreetMap is a wiki-style map of the world and this animation displays a white flash each time a way is entered or updated. Some edits are a result of a physical local survey by a contributor with a GPS unit and taking notes, other edits are done remotely using aerial photography or out-of-copyright maps, and some are bulk imports of official data.