I've set up a forum at ezboard so people can discuss socialism and, particularly, the WSM. And anything about capitalism as well.
I know the WSM has a mail forum but It would probably be better to have one that is a bit easier to view and contribute to. That way there's more chance that people will ask questions. Separate sections make it a bit more understandable too.
Anyway, see what you think. RD and others might be interested.