Now who would have thought Burger King would set out to test the loyalty between friends? Whopper Sacrifice, the new Facebook app by Burger King ask you to delete 10 friends from you friends list and get a free Whopper on the house. The app works for US residents only, and all one needs to do is add the app, select a friend, and click ‘sacrifice’. Once you’ve completed the act, you’ll receive a coupon from Burger King, for a ‘free’ Whopper.
