Where to find new Multiplayer game forums?

[googly1]

Hi, I cant find where the multiplayer games are listed and subsequently I cannot sign up for them. I can find the games on lamaserver.net but I know that I must sign up for a game prior to submitting a pretender for one of these games. But I cant find where to sign up. None of these games seem to be posted on any of the websites I am looking at.... IS there a new forum where people sign up for multiplayer games??