I wonder if Niantic would ever open up some API's to gamify this by tying it into Pokémon Go.
But we've also head plenty of teens adding fake data to have pokemons in their front garden. To much gamification hurts.
This sounds like a really cool project. Thanks for your hard work.
(I'm not sure about the details, but I think the spawn points were OSM based long before the map rendering was OSM based to). In either case, read their Wikipedia page for more details (https://en.wikipedia.org/wiki/Niantic,_Inc.) and our OSM-wikipage (https://wiki.openstreetmap.org/wiki/Pok%C3%A9mon_Go)