I've just been messing around with ebay rss and widgets to display stuff, and am quite pleased with the results. I'm only just getting the site converted from what was supposed to be a local directory.
It's now a site showing niches on ebay in a local area. (well the directory was local!)
I've made a good start on the motors section so far, though would be interested in any comments or feedback!
The South Bristol Auction Directory - Used Cars In Bristol