I gotta confess, I am far less than thrilled about a rep system. I mean, some people will get a bloated opinion of themselves with a high post count (not pointing fingers at anyone here), but a rep system has potential to take that E-peen comparisons to a whole new level.
If it ends up working, more power to you I guess. But until I see that it works over the long term, I'm going to play it the way I've always played this sort of thing and dial down my posts for a while. Because my ego is fragile.