I run a forum about cichlid fishes and we have a subforum for selling items, since the mail goal is to discuss about fish and not selling things we've implemented a rule so that people can only have one topic in that subforum and have to update it.. they can advertise it by putting a reference to their topic in their signature, in this way it will force people to participate in order others to see that the post is updated.
What I need is some help, guidelines in order to understand what to change so that one user can only have one topic in that particular subforum, maybe with a switch in ACP. Where to start from ? Any ideas ?
All help is usefull..
Thanks in advance.