Web 2.0 Design Guide

The list below is a summary of many of the common features being used on “Web 2.0″ sites.

Clearly, a site doesn’t need to exhibit all these features to work well, and displaying these features doesn’t mean your site will look Web 2.0.

1. Simplicity
2. Central Layout
3. Fewer Columns
4. Separate Top Sections
5. Solid Areas of Screen Real-estate
6. Simple Navigation
7. Bold Logos
8. Bigger Text
9. Bold Text Introductions
10. Strong Colors
11. Rich Surfaces
12. Gradients
13. Reflections
14. Cute Icons
15. Star Flashes

Source: http://2-0.net