YUI 3: Lighter, Faster, Easier to Use [JavaScript & Ajax Tutorials]
Ara Pehlivanian gives a tour of what's new in YUI3, like Node and chaining. We're using YUI3 on Launchpad, and I think reactions are mixed among devs. Everyone has a strong opinion about js libs. :) But I like YUI3 and this article outlines some of the improvements made over YUI2, which I also had experience with at the Washington Post and Greenspun.
