Same goes for Newbies, but an even more complicated issue would be someone changing their signature to a paid one. Would that delete a 2 year old post?
it would not delete the post but it would prevent them from making a new reply in a thread that has paid sig users blocked.
So I could take it off, post and put it back one. If I rewrite the post it would take only a few seconds. Even if the campaign is checking via bot I could bypass the system. Assuming there are no time based limits in place.
I dont see that as a problem either, there already is a script that blocks paid sigs.
Nope, but it might be hard to create a list of all accounts made for a few posts. IIRC the speculation section had a problem in that regard for a while.