Everyone knows that Facebook friends of Facebook friends are all 100% vetted and respectable, so Hinge would like to invite you hook up with them. The DC-born dating app will send you pics of 25 friends of friends every day. Any singles that you rate 4 (out of 5) or higher will get a notification, and if they rated you equally sexy, the app will put you in touch. Don't believe it? Then watch the above video, where even our editor manages to score a date!