I have been hoping for more selling and trading on this site for a while now. It's usually just hit or miss though.
If anyone has cards to sell or trade, why not post them on Elmar's site? You can post a scan of each card and list it for free. There is also a Wish List section where you can list cards that you are looking for.
There are currently about 25 cards for sale or trade, including prewar cards, 50's and 60's. The more that people get involved, the better for all of us.
http://www.collectthemall.net/hc/front.aspx
I hope to see more cards posted soon.