In the test, the "virgins" were asked to try both the McDonald's Big Mac and the Burger King Whopper, and give their preference, if any. According to the advertisements and accompanying mini-documentary, the Whopper was the most popular sandwich among the test subjects.[75][76] A social media based promotion from Crispin Porter + Bogusky in 2009 gave a free Whopper coupon for every 10 friends on Facebook a user would drop. The advertising program dubbed "Whopper Sacrifice", was stopped after a week when Facebook canceled the Whopper Sacrifice account as a violation of its user privacy policy.