Not really sure how to respond to this. Kimberly and I spoke and will see what we can do to spark more interest in the forum side.
It really is up to the person, I know many are not forum people, some are though, we still have over 500 vendors on the site. I know that some have never even ventured to the forum, because you don't see them.
Anyway, we'll keep doing what we can on our side. Kimberly just sent out a newsletter to start a new blog ring, so that may start more interest in the forum side. We haven't sent out a newsletter in forever so I'm sure that hasn't helped, I mean people get tied up with life, so we need to send out newsletters from time to time to keep our name floating around in peoples head. I've just always tried not to do it too much because I think it is annoying.
All in all it is a group effort, so all you can do is your part individually and it will all hopefully come together.