Ready to delete 10 Facebook friends for a free Whopper?

"Fast-food chain Burger King has created Whopper Sacrifice, a Facebook app that will give you a coupon for a free hamburger if you delete 10 people from your friends list," reports CNET.  "Burger King has put out some interesting campaigns as of late (Whopper Virgin, Subservient Chicken), but this one piques our interest because of how gleefully it pokes fun at our social-networking obsessions. 'Now is the time to put your fair-weather Web friendships to the test,' the Whopper Sacrifice site explains. 'Install Whopper Sacrifice on your Facebook profile, and we'll reward you with a free flame-broiled Whopper when you sacrifice ten of your friends.'"