Facebook knew what was going on, but they never notified the users whose privacy was breached.
I must say facebook use there to make wealth rather than create means to generate wealth for their users, But steemit create wealth for users. I have been on facebook for the part 10 years but haven't made any money from it, But i join steemit 6 months ago but can't make account of the money i have made kudos to Ned Scott for introducing this platform to the world with the username @ned
I couldn't have said it better myself. Facebook makes money out of you, while steemit gives you a chance to make earn and a platform to have a voice without being censored.