Interesting things bubbling up at eBay

There are plenty of innovative and creative technologies bubbling up at eBay. I'll consolidate the ones that I know of that are publically available, and list the links to them. Most are either alpha or beta so they may be buggy, broken, or unavailable. I imagine you'll put up with quite a bit of bugginess to be an early adopter or a previewer, right? I knew you would. :)