The so called class system is a waste IMNSHO (In my not so humble opinion). The sheer number of posts does not a good poster make. In fact, some of these numbers stem purely from useless "me too" and "I agree" posts. I would leave it to the members to judge from the content of the posts and not from number as to whether to give credence to the opinions of the poster.
On the other hand, a large number of posts do mean one thing. They have managed to babble for a long time without getting banned.
Can't be too bad then, eh?