Web 2.0 refers to open source technologies associated with web applications that allow users to interact and change website content. It provides a platform through the browser to run software applications and gives users control over their own data. Examples include social networking sites, wikis, blogs, and video and photo sharing sites that allow people to socialize and share interests through individual profiles and networks.

2. Web 2.0 includes Rich Internet Applications,Service Oriented Architecture and Social web.

3. Web 2.0 allows its users to interact with other users or it allows to change the web site content.

4. CHARACTERISTICS OF WEB 2.0 They provide “network as platform” allowing user to run software applications only through the browser. User can own the data and exercise control over that data.

5. FEATURES OF WEB 2.0 Search,Links,Authoring,Tags,Extensions,Signals EXAMPLES OF WEB 2.0 Web based communities,hosted services,web applications,social networking sites,video sharing sites,wikis,blogs

7. Delivered by site-specific browser via browser plug-in or virtual machines or sand boxes.

8. Adobe Flash,Microsoft Silverlight and Java are the three top frameworks.

10. Two ways by which people can socialize with each other.

11. People focus websites eg:facebook,bebo,myspace Hobby focus websites eg:flickr,kodak gallery,photo bucket.

13. Consists of representation of each user (profile),social links and variety of additional services.

14. Web based sites and allows user to interact over internet such as email and instant messaging.

15. Social network services-individual centered services Online community services-group centered services Share ideas,events,activities and interests within the individual networks.