[user104658]

As I said on the other thread about this recently; it can go horribly wrong. Obviously. Because the people doing it are amateurs, and also usually pig thick amateurs. I personally know of a case where a group of facebook live "paedobusters", who looked like they'd come straight off of the set of "This Is England", posed as a 15 year old girl and busted a "paedo" who turned out to be a 16 year old boy. He also happened to be a 16 year old boy from another pretty rough family, who tracked down the "paedobusters" group, and let's just say it... ended with their facebook page going offline permanently. Amongst other things.

IF it was being done in an organised and professional way, and with care, then sure why not. As it is, it's being done by idiots who are really only looking for a "legitimate" way to throw their weight around and threaten people because that gives THEM a thrill, and they like the positive attention and praise they get on Facebook from other like-minded idiots. They make mistakes, hurt the wrong people, and ultimately end up getting themselves hurt too.

So no I don't agree with it.