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An animation showing edits to OpenStreetMap.org over the period 2007-2012. Created by ITO World for StateOfTheMap.us 2012 being held in Portland 13-14 October 2012. Every flash is an edit; blocks of flashes are imports of large amounts of data from a single source, for example TIGER data from the US census.
The original 1080p file is available to download when you are logged in.