Web 2.0 refers to websites that allow users to interact and collaborate to contribute content, as opposed to non-interactive websites where users can only passively view information. Examples include social networking sites, video sharing sites, wikis, blogs, and mashups. The term was coined in 1999 and began rising in popularity in 2004 when the first Web 2.0 conference was held. Key characteristics of Web 2.0 include using the network as a platform, participation and flocking by users, radical trust between users, and leveraging metadata for scalability. Technologies that power Web 2.0 include Ajax, Flash, and JavaScript frameworks. Web 2.0 is used in domains like blogging, social networking, publishing

1. WEB 2.0 By K.Santhosh Kumar

2. Introduction to WEB 2.0 "Web 2.0" is commonly associated with web applications that facilitate interactive information sharing, interoperability, user-centered design and collaboration on the World Wide Web. A Web 2.0 site allows its users to interact with each other as contributors to the website's content, in contrast to non-interactive websites where users are limited to the passive viewing of information that is provided to them.

3. Examples of Web 2.0 Web-based communities, Hosted services, Web applications, Social-networking sites, Video-sharing sites, Wikis, Blogs, Mashups, and folksonomies.

4. History of WEB 2.0 The term "Web 2.0" was coined in 1999 by Darcy DiNucci. In 2004, the term began its rise in popularity when O'Reilly Media and MediaLive hosted the first Web 2.0 conference. O'Reilly et al. contrasted Web 2.0 with what they called "Web 1.0". They associated Web 1.0 with the business models of Netscape and the Encyclopedia Britannica Online.

5. Real Web2.0 Design 1. Simplicity 2. Central layout 3. Fewer columns 4. Separate top section 5. Solid areas of screen real-estate 6. Simple nav 7. Bold logos 8. Bigger text 9. Bold text introductions 10. Strong colours 11. Rich surfaces 12. Gradients 13. Reflections 14. Cute icons 15. Star flashes

6. WEB 2.0 Tags

7. Characteristics Network as platform Web-as-participation-platform Flock Free-ride Radical Trust Metadata Scalability.

8. How it works Asynchronous JavaScript XML (Ajax) Adobe Flash Adobe Flex framework JavaScript/Ajax frameworks 1.Yahoo! UI Library 2.Dojo Toolkit 3.MooTools 4.and jQuery.

9. Technology Search Links Authoring Tags Extensions Signals

10. Usage Blogs Wikis Social networking technologies Enterprise Classroom Publishing Medicine

11. Thank you..........