Hilarious yet interesting info thanks to Jake: http://gothamist.com/2013/01/04/interactive_map_graffiti_complaints.php
In general, mapping graffiti walls can bring the buff along with the tourists, competitors and police, but in big cities like NYC where every inch is photographed, mapping mass photo data is perhaps less harmful, because lots of people know where it is already.
Think twice about geolocating your secret and chillest spots though. The person you get arrested might be yourself. Check your camera phone settings to make sure it's not recording location when you don't want it to.
In general, mapping graffiti walls can bring the buff along with the tourists, competitors and police, but in big cities like NYC where every inch is photographed, mapping mass photo data is perhaps less harmful, because lots of people know where it is already.
Think twice about geolocating your secret and chillest spots though. The person you get arrested might be yourself. Check your camera phone settings to make sure it's not recording location when you don't want it to.