crazysvn I guess currently there's no extension can do like this: newly registered user can post only after several days later, or can only send very limited num posts in 10 days since registered. ?
RelicSystem Issue covered here probably the only change in method here is you would set the default members group to have approval for posts on and once they (the user) hits a certain number of posts/days registered you kick them into a new user group with elevated permissions.