Before posting on any thread in scam accusation, auctions, make sure that you have checked OP's posted topics, there is always a post containing the link to the new place of the topic
That's not always true. The thread announcing the topic was moved is published only if the OP (or the moderator) chooses to do that. It's optional:
Besides, moving the thread is not a prerequisite for Auctions.
maybe we could have the OP removed as the author of such threads, making a guest account as the author when you move a self moderated thread to those boards
I don't like that idea very much. Then we wouldn't know who created the thread and the OP wouldn't have any control of it at all, he wouldn't just lose the disallowed functionality as he should. I think there are much better ways to prevent this issue
why did you post this publicly?
This (bug?) doesn't allow users to hack others' accounts, reading PMs, injecting code into the DB or other
security vulnerabilities so I don't think there's a security risk here.
It seems several users are already abusing this so I think it's better to make it public so that users know their posts could be moderated even in Scam accusations and OP's posts could be edited or deleted even on Auctions until this is fixed. This can reduce the effect of the exploit. Besides making this public can add some pressure so it's solved faster.
If an Admin disagrees and thinks there's an issue in making this public then he can trash this thread. I guess some Admin would've already done that in that case.