I think thats a worst scenario mate and its really not worth gaining negative trust, because we are having our open ideas and here so we can determine those scammers circulating around this forum. We cannot allow this to happen anymore, and before we are going to give scam accusation, the proof shall be concrete evidence so that when theres a red trust given to whom raising the accusation; could appeal through conversations in the forum. Warning those potential scammer isnt easy job to do, and maybe we can report it directly to moderators here so that it can be discreet conversation through private messages.
You are welcome to join the discussion about scammers:
https://bitcointalk.org/index.php?topic=2338602