There were loads of items on there but they all expired. If you add a new one to the block chain it should show up there.
This is great news!
If you don't mind my asking, How did you get the pictures to be included on the listing?
I'm just parsing out any url with a image extension and then displaying it in a slideshow. Nothing fancy, but it shows how it could be used. I have talked to danosphere about the potential of adding different fields to the marketplace items, as they need some TLC to be able to compete with existing ecommerce platforms.