Scribehost's forums are split: the general questions / feedback, announcements, and news forums are viewable by all, with guests able to post in the questions / feedback forum; and the actual meat of the support forums visible only to registered members. Forum membership is restricted to hosting clients. This keeps others from, essentially, raiding our support library, but gives potential clients a place to come in contact with our current clients, ask questions in an open forum, what have you.
Amusingly enough, though, we do have some problems getting clients to actually *use* the forums.