The popular game Pokemon Go now (Dec 1) is using OSM for the base map in the game for (all) the world.
Expect to get a massive increase in the users registering and editing OSM in the coming days/weeks.
Things to look out for:
People adding new roads and paths. People editing/deleting existing roads and paths, especially the small driveways, etc as they lump the mall together in their rendering and look ugly and cluttered so I expect people will be changing these to the wrong type or deleting them altogether so they can veiw there map
So roll up and begin casting an eye on the swarm of edits.
I, for one, welcome our new Pokemon editor overlords..