It seems most important aspect of Web 2.0 is the values it espouses. Web 2.0 purports to be collaborative, participatory, simple, accessible, efficient, lightweight, approachable, action-oriented, and user-driven. These values are found in companies like Google, Yahoo!, Netflix, Flickr, Technorati, Skype, and eBay. When you think about Web 2.0, first think about the values before you think about potential applications of the technology. The technology is nifty; the values are competitive.  

 - Shiv Singh