I've sold a few things on Listia, with some aggravating results, but still have enjoyed the experience overall. I have been able to pick up a few free additions to one of my periphery collections: pins.
Mostly, my small collection of pins is baseball related. So I was thrilled to get this Ichiro Jersey pin to add to it.
The other theme is corporate/business logos. The Kelloggs Olympic Pins group I showed a while back is an example. This CAT pin only cost a few hundred points. Crap, this iPhone image rotation baloney is pissing me off to no end!