Facebook knows more about us than any other company in history. But we know very little about how Facebook works or what it does with our personal information. Reporter Darragh Mac Show more
Discover 11,128,835 listings and 278,128 playable programmes from the BBC
Facebook knows more about us than any other company in history. But we know very little about how Facebook works or what it does with our personal information. Reporter Darragh Mac Show more