Microsoft's Windows Live will include Expo, a user commerce service.
Craigslist meets eBay meets Yahoo! Groups using Passport /  Windows Live identity, location awareness, collaboration and communication tools. Get a chat message every time a used bicycle is posted for sale in your town this week. Talk to someone selling a car. See what your friends and family are selling. Find a job. Join the Elvis Figurines group.

Discussion points for SkypeBay:

1. Are we integrating PayPal and Skype into marketplaces faster than Microsoft?
   
2. How well are we supporting Craigslist-style local micro-markets?
   
3. How many of our category managers are using Skype as their prime phone?
   
4. Are we helping people connect for activities, career, advice, and other things that UPS can't package?