When broadcasting your every thought via Facebook and Twitter isn't enough, there's Foursquare, the next generation of creepy social networking. Instead of saying where you are, you can use your phone's GPS to broadcast the address. Just another tool tapping into a generation of narcissism, with which you can earn badges for checking into your local Starbucks more than anyone else. While coupons eventually come along as bonus incentive, Foursquare simply builds another layer onto a generation living virtually. Introduced in 2009, the site has only a million users a drop in the bucket compared with Facebook, expected to soon reach 500 million. But like most social-networking phenomena, its usage is only growing.