I have been a member here for a while now just never really posted but I thought I would throw my view in for discussion/to be flamed!
Personally I feel that the rep system causes a problem in that newer members can't start a new thread in the main MMA discussion area, instead only being able to start new threads in "Noob Jack City". I think this may be unfair in that older or more experienced posters are just as capable of posting crap as new members. I myself feel that I have been a victim (ok, maybe a little harsh but you get the drift) of this but thats another story!
Having been an administrator on other forums, not as large as this self admittedly, I know from experience some members who have been here for a while will leave because they feel they cannot relate to newer members who they do not know as well as other older posters.
Thats the price of growth. Would you rather have a smaller, perhaps happier, community, or be one of the larger, more well known MMA Forums?