May 18th
Cool Web 2.0 Interface: Backpack
Introduced 2 weeks ago by the folks at 37Signals, Backpack is now an official Web 2.0 interface. This is because it now has an API for your remixing pleasure.
What I really like are the clear examples in the tutorial they give about how to use the API. This should get folks up and running in no time.
By the way, Richard MacManus and I are looking for good stories about remixing for our column on Digital Web. If you have any, or know of any, let us know here in the comments.