eBay To Go
First, the widget is like a mini-eBay, which isn't necessarily the right approach depending on the demographic target. If eBay was hoping for viral growth with young users, they need to put some serious work into making it more engaging to viewers. Not sure why they don't show the 'hot' styles in apparel or something that would engage young women (who drive viral widget adoption on social networks). Also, the format and design of the widget needs to be tailored for a specific user demo.
All in all though, it's great to see eBay push the boundaries a little. Let's hope there's a lot more to come.