At Google I/O 2009, we demoed a nifty sample application that tracks updates to any number of YouTube user activity feeds. The technology behind the application is the Simple Update Protocol ...
At Google I/O 2009, we demoed a nifty sample application that tracks updates to any number of YouTube user activity feeds. The technology behind the application is the Simple Update Protocol (SUP), a simple and compact "ping feed" that enables your application to efficiently monitor changes to a large number of user activity feeds.

If you run a social network with tons of users who also happen to be active on YouTube, you should consider using SUP to let your users easily share their updates on YouTube with their friends through their social graph on your site. See the docs here.

Posted by Kuan Yong, YouTube APIs and Tools Team

The team has been working to improve the API upload infrastructure behind the scenes, and the new build is up at:

http://uploads2.gdata.youtube.com

Please do regression testing on your systems and report problems in our ...
The team has been working to improve the API upload infrastructure behind the scenes, and the new build is up at:

http://uploads2.gdata.youtube.com

Please do regression testing on your systems and report problems in our discussion forum.

Barring any major complications, this will begin rolling out to the production uploads URL (uploads.gdata.youtube.com) in two weeks.

Posted by Stephanie Liu, YouTube APIs and Tools Team