If Web 2.0 is a collection of the most effective ways to create and use Web pages,  is there any reason to make a page that  follows the Web 1.0 model? It may sound surprising,  but   the answer   is actually yes.  There are  times when a Web 1.0 approach is appropriate. Part of the Web 2.0 philosophy is creating a Web page that  visitors can impact or change. For example, the Amazon Web site allows visitors to post product reviews.   Future   visitors  will   have   a   chance   to   read   these   reviews,  which  might influence  their decision  to buy  the product.  The ability  to contribute  information  is helpful. But in some cases, the webmaster wouldn't want users to be able to impact the Web page. A restaurant might have a Web page that shows the current menu. While the menu might evolve over time, the webmaster wouldn't want visitors to be able to make changes. The menu's purpose is to let people know what the restaurant serves; it's not the right place for commentary or reviews.


Web 2.0  is a  term describing changing  trends  in  the use of World Wide Web technology and web design that aims to enhance creativity, information sharing, and collaboration among users.  These concepts  have  led  to  the development  and evolution of web-based communities and hosted services, such as social-networking sites, video sharing sites, wikis, blogs, and folksonomies. The term became notable after   the   first  O'Reilly  Media  Web   2.0   conference   in   2004.  Although   the   term suggests a new version of the World Wide Web, it does not refer to an update to any technical specifications,  but   to changes  in  the ways software developers and end- users utilize the Web.

Basically, the term encapsulates the idea of the proliferation of interconnectivity and social interactions on the Web. Tim O'Reilly regards Web 2.0 as business embracing the web as a platform and using its strengths. The features that encompasses the essence of Web 2.0 are building applications and services around the unique features of the Internet, as opposed to building applications and expecting the Internet to suit as a platform. Web 2.0 websites allow users  to do more  than  just  retrieve  information. They can build on  the  interactive  facilities  of  "Web 1.0"  to provide "Network as platform" computing, allowing users to run software applications entirely through a browser.


Wikipedia defines Web 2.0 as “ a term describing changing trends in the  use of World Wide Web technology and web design that aims to enhance creativity, information   sharing,   and   collaboration   among   users.”   There   is   huge   amount   of disagreement among internet experts on what Web 2.0 is and how the term is defined. Some say that Web 2.0 is a set of philosophies and practices that provide Web users with a deep and rich experience. Others say it's a new collection of applications and technologies that make it easier for people to find information and connect with one another online. A few journalists maintain that the term doesn't mean anything at all, it's just a marketing ploy used to hype social networking sites.


Although there has been widespread debate on whether actually a Web 2.0 exists or not, Web 2.0 has been one of the most talked about and discussed topics in recent   times.  There  is no denying  the fact   that   there  is a definite visible change of trends while using the world wide web. Even criticizers of Web 2.0 do not deny this fact.