Web-sites like Amazon and Wikipedia have been leveraging the value of community-provide content for years. With all the GPS devices on the road, it seems like map data providers could find a way to collect community-provided map updates from these users.
It looks like TomTom & TeleAtlas “get it” around community-provided map data. TomTom’s recently announced “Map Share” system and their proposed acquisition of TeleAtlas will be a powerful combination.