Quoted from PinMonk:If you are in data security/cyber security and don't understand the problems with facebook, Giuliani's cyber firm has a position for you.
Facebook is TREMENDOUSLY bad. They use facial recognition to build profiles of people in pictures you post even if they don't have an account. They recently were caught abusing bluetooth to build profiles of phones in the proximity of people's cell phones that had the app installed, using that to build profiles of people with no facebook account that made the mistake of leaving their bluetooth open. There are TONS of facebook abuse stories like this. No one should be using them, and yet, they're everywhere.
Let's not forget the social score ratings and cashless push.