Experienced forum-users know- spam isn't just for posts, anymore. Sometimes, an entity will register and then proceed to use the Private Message system to disseminate spam (or worse). Recently, there was a suspicious (but not directly violative) registration here on Talk Classical. We've since used some resources to discover that the modus operandi of this user was to send PMs to members, trying to impersonate Administration, saying that the recipient had a virus detected- and it could be cleared with an attached 'helpful link.'
Yeah, right.
Probably, 99+% of our users here wouldn't fall for this stunt... but we'd still appreciate it if anyone who receives spammy PMs uses the "Report PM" link to inform us of the activity, so that we can waste less time permanently banning the user(s) in question.