The locations of 15,716 movie scenes were already sitting in a free public database that almost nobody ever looked at. Movie Scene Map didn't research any of them. It reads Wikidata, the open database behind Wikipedia, where volunteer editors have been logging where films were shot since it launched in 2012. All the site does is join each of those records to the place's coordinates and a photo from Wikimedia Commons, and suddenly a decade of volunteer labor looks like a finished product built…