While I’m learning advanced Javascript, YUI and YUI-ext I decided to do a little excercise: implement a personalized portal compatible with NetVibes API.
The application will be almost completely implemented in OO Javascript with a little help from PHP for cross-domain requests proxying, user authentication and preference storage.
The UI will be implemented by using the YUI and the excellent YUI-ext libraries.
Aptana is my preferred tool for JS coding (I actually use the Eclipse plugin version in place of the dedicated product).
I already have a proof of concept on my workstation that is able to render NetVibes modules.
Next steps are:

• Multi column layout based on the powerfull YUI-ext Layout component
• Drag and Drop of modules between columns based on the YUI dragdrop module
  or the new YUI-ext DD when it will be release
• Full NetVibes API compatibility
• Localization support

More to come soon, next week I’ll publish some code, stay tuned!