I was thinking maybe a marketplace / classifieds category with for sale and wanted forums. Maybe a "For sale, Swap, Offer" that would cover the "Fruit" forum also as doesn't seam to get much attention.
Basically just a category for all buying, selling, giving away or looking for.
Or maybe just quick reply
I have also noticed there is nothing to do with iTrader in ones profile. Maybe something like on a users "post profile" (phpbb talk) could be added?
Just my .02