A real problem.
I am a moderator on Bleeping Computer and every so often we get topics started by people who are being surveilled by ex partners or lovers or suffering abuse in one form or another. It is not a problem that BC was set up to handle and apart from the obvious - change accounts, change passwords, report it to the police - there isn't all that much we can do to help.
After all, why should you have to close say your Facebook account because somebody is posting comments on it slagging you off ?
Chris Cosgrove