
Microsoft's Chris Satchell realizes that being able to create games with XNA is great, but what would be even greater is if you could somehow then get those games out to the public. To that end, Microsoft is working on a YouTube-like service that would make it easy for XNA users to display and share their games:
At the moment, PC games made with XNA can be distributed freely, but you have to belong to the subscription-based XNA Creators Club to share 360 titles.
Microsoft actively working towards Youtube-like games service [Develop]