as im not a member yet, i cant tell for sure, but it seems like all forum threads are public.
i think at every game section there should be members only area/threads to discuss things like tactics, server related problems/notes etc.

i for example trying to put up few tips/tactics at MoH, and wouldnt want the team who would come here to challenge us to see it..

thats it ﾃつ*:?