For Sale Ads now Close 30 days after last posting.

I had planned on using a classified ad system that would have accomplished this, but the author became unreliable so I chose not to use that system.

The only way I know to fully stop the problem you describe is to not allow people to post in for sale threads at all.

Let me ask you this then, if an system can't be implemented to stop the carpet bombers from posting a full page of ads at one time?
Can you just put in the "Rules" that you can only post so many ads at a given time, limit the amount of them?
Guess it would be self policed if the members follow the rules or not, in all the for sale sections.
But a few are taking serious advantage for themselves the way it is now.
My 2 cents on the subject, anyway.