APPROVED Post Requirement for The Marketplace?

The Limit on the marketplace is to post a new thread, anyway we can put a limit on there for them to post at all?

 

If we do that then we will see a swarm of single word posts that add nothing to a discussion. I would like to see how the current system works before making any more changes. If it still isn't working in 2 weeks or so I will add the post requirement. Most likely forcing them to post X times would kill activity not promote it.