LotR Boards
I'd certainly throw my support behind a Coda LotR Message Board similar to this one for Trek. As moderator of the aforementioned lotrrpg_coda Yahoo group, I can say with relative certainty that there is almost NO competition online as of yet. (There probably will be once the game gets released to the general public though.)
I'd also be willing to help out with some of the workload, Don. I'm pretty ignorant when it comes to webdesign, but I could help out with graphics, moderation of forums (I know the CoC well being a member here for several years), or anything else I can do to help out (content editing, if you plan for fan submissions and such).
Anyway, I just thought I'd show some support if you still need convincing, Don. I second REG's statement: DON'T go to the Decipher Boards!
Steve
Drunken DM and the Speak with Dead spell: "No, I'm not the limed-over skeleton of the abbot, and no this special key in my boney fingers does not open the door to the secret treasury! ... Oh crap."