I added forums for the optional groups. Only those who are in the group can visit it(and admins of course harhar ).
Mods in those groups are the groupleaders. Those are as follow:
Female group of greater pwnage: took the freedom to make sarinha leader of this group(hope this is ok with you )
Leecher Hunt Association: Glupus (8 join requests you have to accept btw)
World of Warcraft Nerds: XaooaX, Blarg, Volund
WC3 1500 Icon Organisation: X-FreeLoOsE-X, Illidan_000
Now joining the group you think you fit in, has some benefit.