This OpenStreetMap US Virtual Mappy Hour features an overview of the MapRoulette project with guest presenter Martijn van Exel.
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MapRoulette
MapRoulette breaks up OpenStreetMap work into snack-sized “challenges.” Earn points by fixing validation issues, turning nodes into areas, adding missing tags, and through countless other little tasks that contribute to a healthier map.
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This OpenStreetMap US Virtual Mappy Hour features guest presenters from the OpenHistoricalMap project.