Yesterday I found this excellent Web 2.0 how-to design style guide by Ben Hunt. I accidentally found it while searching with the keyword “Web 2.0” in google’s new blog search.
This style guide focusses on the new trends in the web 2.0 designs such as:
- Simplicity
 - Central layout
 - Simple nav
 - Bold logos
 - Bigger text
 - Strong colours
 - Rich surfaces
 - Gradients
 - Reflections
 - Cute icons
 
I can bet you’ll like this site as anything. Also do browse the other sections of the site, its a gold mine!!