Web 2.0

Web 2.0 is the term given to describe a second generation of the World Wide Web that is focused on the ability for people to collaborate and share information online. Web 2.0 basically refers to the transition from static HTML Web pages to a more dynamic Web that is more organized and is based on serving Web applications to users.

Some examples of features considered to be part of Web 2.0 are listed below:
 * Blogs - also known as Weblogs, these allow users to post thoughts and updates about their life on the Web.


 * Wikis - sites like Wikipedia and others enable users from around the world to add and update online content.


 * Social networking - sites like Facebook and MySpace allow users to build and customize their own profiles and communicate with friends.


 * Web applications - a broad range of new applications make it possible for users to run programs directly in a Web browser.

Whether Web 2.0 is substantively different from prior Web technologies has been challenged by World Wide Web inventor Tim Berners-Lee, who describes the term as jargon. His original vision of the Web was "a collaborative medium, a place where we [could] all meet and read and write." On the other hand, the term Semantic Web (sometimes referred to as Web 3.0) was coined by Berners-Lee to refer to a web of content where the meaning can be processed by machines.