McCann London has created a way to make your flight searches just a bit more fun. For travel search engine Momondo, the agency created Friend Compass, which lives within the site's mobile app. It turns your phone into a compass that spins to find your friends, and the cheapest flight to get to them. Sort your searches to visit friends by price, distance, or weather, and you can also get some cool info on the "hottest," "coldest," "priciest" and "cheapest" friends to visit. The app works with Facebook.