Web 2.0 - Wikipedia, the free encyclopedia

Description

It has been suggested that Web 1.0 be merged into this article or section. ( Discuss )

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Web 2.0 is the business revolution in the computer industry caused by the move to the Internet as a platform , and an attempt to understand the rules for success on that new platform.

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Definition

Level-3 applications, the most "Web 2.0"-oriented, exist only on the Internet, deriving their effectiveness from the inter-human connections and from the network effects that Web 2.0 makes possible, and growing in effectiveness in proportion as people make more use of them. O'Reilly gave eBay , Craigslist , Wikipedia , del.icio.us , Skype , dodgeball , and AdSense as examples.

Level-2 applications can operate offline but gain advantages from going online. O'Reilly cited Flickr , which benefits from its shared photo-database and from its community-generated tag database.

Level-1 applications operate offline but gain features online. O'Reilly pointed to Writely (now Google Docs & Spreadsheets ) and iTunes (because of its music-store portion).

Level-0 applications work as well offline as online. O'Reilly gave the examples of MapQuest , Yahoo! Local , and Google Maps (mapping-applications using contributions from users to advantage could rank as "level 2", like Google Earth ). In addition, Gmail .

Technology overview

Search

the ease of finding information through keyword search which makes the platform valuable.

Links

guide to important pieces of information. The best pages are the most frequently linked to.

Authoring

the ability to create constantly updating content over a platform that is shifted from being the creation of a few to being the constantly updated, interlinked work. In wikis, the content is iterative in the sense that the people undo and redo each other's work. In blogs, content is cumulative in that posts and comments of individuals are accumulated over time.

Tags

categorization of content by creating ...

Original URL

http://en.wikipedia.org/wiki/Web_2.0

http://en.wikipedia.org/wiki/Web_2.0