[EricH]

Originally Posted by kramarczyk

Perhaps there just needs to be a 'report' button for PM's like there is with posts.

With a twist--if a user gets reported enough times by enough different people, their PM sending privileges automagically get shut down long enough for a moderator to review the reports and either allow the PMs or block the user's PM/site access. I don't know how hard that would be to implement, though.