He has 1391 "friends" on Facebook. I think this is past the point you can claim to actually know all of them, or even recognise all of them in a crowd. This is

He has 1391 "friends" on Facebook. I think this is past the point you can claim to actually know all of them, or even recognise all of them in a crowd. This is also past the point where you can fool yourself that anything restricted to "friends" on Facebook is actually private.