That is a good question. Perhaps after E3, a moderator could lock the subforum and the conversations, if the forumers wish to continue them, would go to the respective forum areas?
X- game is announced for the Wii at E3. NWR guys post info on the E3 subforum, we all post there. E3 ends, each topic gets an official discussion in the respective area of the forum, done either by regular members (Maxi probably) or by moderators.