Limit number of posts in a specific time period by usergroup in a forum or sub-forum


Well-known member
I've been looking for this for a while and haven't found it. Is there any existing mod which might have this feature? What I'd like to do is in the marketplace section on my forums I allow regular members to make one post per week, and "supporters" to make one post a day. But, the problem is that we have to manually enforce that rule and regular members who don't read the rules don't know why they can't make a post every day like the supporters do, so it would be very useful to have something which automatically enforce the rule and we won't need to spank anyone anymore. So if anyone know of an existing addon that could do that, please let me know. Alternatively, I'd like to have an addon developed and would welcome recommendations of developers to work with (or pm me if you are interested in doing the project).