I've only been here a couple months myself and occasionally seen the other memberships referred to. I believe that a higher membership allows you to advertise in the Marketplace forum: http://www.bikeforums.net/forumdispl...e-Market-Place

I guess I'd hit the "contact us" at the bottom of the pages or go directly to Tom Stormcrowe he's linked at the bottom of the main forum page for more information.