Yesterday we released a new set of YouTube APIs based on the Google Data protocol. These APIs are cool because:

a) enhanced scalability and stability
b) access to Google Data code libraries
c) new types of calls to get stuff like video comments, etc
d) a heady roadmap full of new things coming out in the coming months

congrats to the team! Our APIs are an important part of the strategy to bring YouTube content to audiences outside of our destination site.