Business trends change as well as technology.  Nowadays, enterprise level corporations practice business contenting three aspects:  economic impact, community value, and enabling technology.  Web 2.0 provides the ability to interact with customers, vendors and partners.  Using Web 2.0, company can have cost-effectively sell and market wider varieties of products and services.  Web 2.0 applies exactly the philosophy of human being this decade:  friendly-sharing-creative.  Business models based on Web 2.0 technology, which can change how people connect, communicate, and organize.  It is more difficult to replicate and thus potential deliver a more sustainable competitive advantage.  It tranports the internet as the platform and given certain rules and features for sucess on that new platform:  PARTICIPATION, USABILITY, AJAX, SOCIAL SOFTWARE, WIKIS, BLOGS, FOLKSONOMY, RSS, MOBILITY, SIX DEGREES, JOY OF USE, etc.