What about a Classifieds section under the forum tab?
I realize that it may possibly be bombarded with spam, but the section should be for paying, registered users only. Possibly requiring your persoanl accoount login in order to post. They should also be related to only things in the photography industry. This may include studio equipment, props, model outfits, cameras, lenses, tripods, developing and enlargers, etc...
I am always looking for some good deals on Craigslist, NAPP, and Model Mayhem classifieds sections and thought that maybe PBase could use a section.
This is just a thought. I know I would browse it everyday. What does anyone else think?