I've seen this suggested several times recently, usually on threads where the OP is complaining about somebody. If the OP hasn't namechanged, then their RL nemesis will basically be able to do a search of their name and find out all about their piles and/or husband's affair, and even if they have posted under a new name, presumably the person in real life will be able to identify exactly who has been slagging them off to all and sundry on a public forum?
Has anybody ever done this and found that it was at all useful? Just wondering really.