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You don't have much choice when your friends or relatives post about you on Facebook either, and there, lying to Facebook is out of your hands. Privacy isn't t

• macintux 11y ago
  I do not know, but strongly suspect, that my absence from Facebook means I'm rarely mentioned there. Certainly I'm mentioned less than if I had an account. Even if I am mentioned there, Zuckerberg & friends don't have any account to cross-reference to target me with ads, etc. So, my absence from Facebook is nonetheless a significant enhancement of my privacy.
  • fabulist 11y ago
    It is worth noting that Facebook maintains "ghost" profiles for people who aren't members, but of whom they are aware. I'm having trouble finding a reference, but I remember it came out that when your friends ("friends") give Facebook their email contacts so that they can locate other people using their service, Facebook remembers contacts which do not yet hold accounts. I speculate this information wouldn't be valuable if they didn't attempt to infer that particular posts mentioned these non-member profiles.