Re: RE: As a never-signed up non member....
You've managed to point out *exactly* how easy it is to uniquely and accurately track him!
They have his circle of friends *and* they also have his real name. I don't know about you, but I don't have two friends with the same name. Similarly, I don't have two friends with the same name *and* the same face*.
Facial recognition is getting better and better, so if you were to supply facebook with a photo and the account names of a small selection of friends, I'm sure Facebook could do a *very* reasonable job of walking their social graph and pulling up every photo and post which references you.
* What kind of monstrous parents would have identical twins and name them identically?