Facebook is not mandatory and anything I put on there is by definition intended to be public. If the NSA wants to see pics of my kids on the swings or my family at Xmas dinner that annoys me but doesn’t harm me.
If the NSA takes some forum post from 1997 that I made under a pseudonym and uses it to discredit me when I try to get my kid out of (FSM forbid) Gitmo or some other concentration camp then that would also harm me.
