We sent out a mass email to explain some site changes, I also added it in the rules section, but I figured I would post here as well to make sure the message was received.
Recently we have had an overwhelming number of issues related to users "trashing" other user's threads with comments and content that we feel is inappropriate.
Effective immediately, posting in the for sale section has been restricted in an attempt to solve this problem.
Ads will continue to be posted as they have been from day 1, the part that is changing is other user's ability to respond to these posts publicly.
From this point forward users will PM members in response to ads. The original poster is permitted to bump his or her ad every 24 hours, as long as it has left the front page, and is asked to mark the item as sold when a transaction has been completed.
I regret that this is the direction that we have been forced to go, but I think that in the long run that it will make for a better community.