Visitors with Facebook accounts can install the app, choose ten people from their list then remove them with the software to prove how they prefer the Whopper over them. So far, over 55,000 people have been de-friended and each will have been notified once you lower the guillotine.

UPDATE: The campaign ended almost 234,000 Facebook friendships before the social networking site clipped its wings; hear the whole story from Winston Binch, CP+B's integrated head of interactive production, June 3rd at CaT: Creativity and Technology.