Foursquare, the pointless check-in service with barely any revenue, is now worth more than six times what it was a year ago. Or so say the venture capitalists who just gave the hugely unprofitable company an infusion of cash.

Foursquare just took a $20 million venture investment that valued the social network at $95 million. Congratulations, preening "mayors:" Your obsessive "checking in" with Foursquare's mobile software has been successfully monetized.