Every couple of years some big for-profit corporation has the bright idea to crowdsource people to collect POIs. This usually fails, as they fail to realize that:
1) people will eventually catch on they're being exploited.
2) beyond the initial buzz, no one cares
3) When the money dries, or focus changes, it will all go to trash.

I mean, just look at Esri's Community Maps thing, even with a captive audience, it's a nothingburger.

FourSquare 'Placemaker' - making poisoned datasets more toxic.