Let's get right into it, shall we?
Mark Your Territory is a new system that lets individuals check-in to foursquare by physically urinating at the actual location.
Social networking has gone too far. Because, you know, it's just a matter of time before Facebook tries to duplicate this. Then it'll be everywhere.
Please let this be a hoax. Please.
Link -via NotCot
He explains it best:
http://www.jacklail.com/blog/archives/2011/10/foursquare-gets-pissed.html