The cases aren't parallel. A shadow Facebook profile exists that describes me, but it would be absurd to imagine that Facebook will use this information to, for example, send a SWAT team to my house to perform a forced entry - something which has been known to result from the kind of action here discussed. If you make available the necessary information for 4chan and like ilk to do such things, 4chan and like ilk may very well then do so, simply because to do so will briefly amuse them. Is that something for which you're comfortable with the idea of being responsible?

Don't get me wrong. I have no love whatsoever for Facebook, and I would very much like to see a world where no Facebook does or even can exist. But there's a difference between recognizing the problems that result from Facebook's existence, and imagining Facebook and its employees to be deliberately inflicting such problems on people and thus deserving of threatening, even violent, action in imagined response.