You should make it so that you can write messages directly to another person and they have an inbox of somesort. Or when they log into the site it will automatically tell them they have a message from x. That would make it useful for lots of different reasons and might incourage people to use your sight more often. I think that it would be cool. Just an idea....
Also you might want to put an allowed time for posts in the main forum before they are put into another category or databased away. As I am expecting lots of posts to be forthcoming. Or make the posts so that the most recent is the first one. I know on the general topic we are already at two pages and I didn't really want to click on the next page then scroll all the way to the bottom. Another idea is that you could create a quick button to take you to the most recent post. That would be cool if in the future (sort of like you and Jims calendar thing) we could post that we are going to the dunes or something on the website and whoever wanted could come. You could also do Starcraft tournaments, barbeques, and so forth. And if you did the thing where you could send messages only to certain people you could invite those that you wanted. Just some thoughts.....