I've never really understood this rule. Well I do, but it doesn't make sense. A post count is a measure of the number of posts you have made on a forum, if you're going to display a post count then discounting certain sections of the forum means the figure isn't accurate...so it's not a post count, is it? Might as well just get rid of it
I don't think it would increase spamming as seems to be claimed (and is the reason behind it) but if it did then just ban those people? Spamming is already against the rules after all
I mean either have a post count properly or don't have one at all