Facebook sells ad targeting based on gender, sexual orientation, marital status, age, location, salary, education, musical taste, purchasing behaviour, device usage, interests, hobbies and the list goes on. Without 2B users' worth of personal information, there isn't anything to sell. For Facebook to say 'they don't sell your information' is Orwellian corporate doublespeak. Advertisers pay them money and in exchange, Facebook allows them to target sets of users based on those users personal information. How is this not 'selling information about you'?