Web 2.0 focuses on allowing users to collaborate and share information online through sites like social networks, blogs, wikis, and video sharing. It empowered users to create new concepts like wikis, widgets, and video streaming. Web 3.0 aims to support artificial intelligence through attributes like deductive reasoning, contextual search, personalized search, and 3D capabilities not found in earlier versions. Technologies that power Web 2.0 include Ajax, Adobe Flash, JavaScript frameworks, XML, and JSON.

1. Web 2.0

2. What is web 2.0 Web 2.0 is a second generation of the World Wide Web that is focused on the ability of people to collaborate and share information online. Examples - social networking sites, blogs, wikis, video sharing sites, web applications

3. Difference between Web 1.0, Web 2.0 & Web 3.0? Web 1.0-The main features of ‘The Internet’ not Web 1.0 were hyper-linking and bookmarking of the web pages. Web 2.0-Web 2.0 empowered the new generation to develop new concepts like Wiki, Widgets and Video streaming. Web 2.0 was responsible for the development of various sites that we commonly use today like Twitter, Flickr and Facebook.

4. Web 3.0- Supports Artificial intelligence and some other attributes like Deductive Reasoning, Contextual Search, Evolution of 3D web, Personalized Search and Tailor made Search which was not present in earlier versions.

5. Characteristics Faster Retrieval of information Provide the user with rich user-interface. Dynamic content. User participation Scalability

6. Technologies used in web 2.0 Asynchronous JavaScript and XML (Ajax) Adobe Flash Adobe Flex framework JavaScript/Ajax frameworks such as YUI Library, Dojo Toolkit, MooTools, jQuery and Prototype JavaScript Framework. XML and JSON

7. Advantages of technologies 1]Ajax-Quick page reload. This increases overall performance of the site. 2]Adobe Flex-Used to play audio and video files. 3]Jquery - JQuery is a library of JavaScript Functions.

8. Concepts Rich Internet application (RIA) -Some buzzwords related to RIA are Ajax and Flash. Web-oriented architecture (WOA) - defines how Web 2.0 applications expose their functionality Social Web — defines how Web 2.0 tends to interact much more with the end user and make the end-user an integral part.

9. Features Search –Finding information through keyword search. Links- Connects information together into a meaningful information using the model of the Web. Authoring -The ability to create and update content leads to the collaborative work. Signals-The use of syndication technology such as RSS to notify users of content changes.

10. Usage 1] Social Web 2] In Marketing 3] In Education