1.0: Definition of Web 2.0
“Web 2.0 is the business revolution in the computer industry caused by the move to the internet as platform, and an attempt to understand the rules for success on that new platform. Chief among those rules is this: Build applications that harness network effects to get better the more people use them……………”

Tim O’Reilly
Web 2.0 which is generally called as participatory Web is commonly associated with web applications. It helps to facilitate interactive information sharing, interoperability, usercentered design, and collaboration on the World Wide Web. It is named by Tim O`Reilly in 2004, to refer to a second generation in Web history based on user communities and a wide range of services, such as social networks, blogs, wikis or folksonomies, that encourage collaboration and efficient exchange of information among users .While the old Web was about Web sites, clicks, and “eyeballs,” the new Web is about communities, participation and peering. Web 2.0 draws together the capabilities of client- and server-side software, content syndication and the use of network protocols. Web 2.0 sites provide users with information storage, creation and dissemination capabilities. It also allows its users to interact with other users or to change website content, in contrast to non-interactive websites where users are limited to the passive viewing of information that is provided to them. However, it is a popular term for advanced Internet technology and applications including blogs, wikis, RSS and social bookmarking. The two major components of Web 2.0 are the technological advances enabled by Ajax and other new applications such as RSS and Eclipse and the user empowerment that they support. The term "Web 2.0"is closely associated with Tim O'Reilly because of the O'Reilly Media Web 2.0 conference in 2004. He is generally credited with inventing the term, following a conference dealing with next-generation Web concepts and issues held by O'Reilly Media and MediaLive International in 2004.

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2.0: History of Web 1.0 to 2.0
The term "Web 2.0" was coined in 1999 by Darcy DiNucci. In her article, "Fragmented Future".Her use of the term deals mainly with Web design and aesthetics; she argues that the Web is "fragmenting" due to the widespread use of portable Web-ready devices. Her article is aimed at designers, reminding them to code for an ever-increasing variety of hardware. Beginning in 2002, new ideas for sharing and exchanging content ad hoc, such as Weblogs and RSS, rapidly gained acceptance on the Web. This new model for information exchange, primarily featuring DIY user-edited and generated websites. Tim Berners-Lee’s vision of the World Wide Web was for a tool which created and gathered knowledge through human interaction and collaboration. Web 2.0 is a stage of development in which the Web is progressing towards this goal. Most analysts define Web 2.0 in terms of the tools that foster online participation in content creation and social interaction.

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. For example, Netscape framed "the web as platform" in terms of the old software paradigm: their flagship product was the web browser, a desktop application, and their strategy was to use their dominance in the browser market to establish a market for high-priced server products.

O'Reilly's Web 2.0 conferences have been held every year since 2004, attracting entrepreneurs, large companies, and technology reporters. In terms of the lay public, the term Web 2.0 was largely championed by bloggers and by technology journalists, culminating in the 2006 TIME magazine Person of The Year – "You". That is, TIME selected the masses of users who were participating in content creation on social networks, blogs, wikis, and media sharing sites. There's still a huge amount of disagreement about just what Web 2.0 means, with some people decrying it as a meaningless marketing buzzword, and others accepting it as the new conventional wisdom. (Wikipedia,2010)

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3.0: Conversion of Web 2.0

DoubleClick

• Google Adsense

Ofoto

• Flickr

Akamai

• BitTorrent

Mp3.com

• Napster

Britannica Online

• Wikipedia

Personal Websites

• Blogging

Evite

• Upcoming.org and EVDB

Domain name Speculation

• Search engine optimization

Page views

• Cost per click

Screen Scraping

• Web Services

Publishing

• Participation

Content Management System • Wikis
Directories

• Tagging ("folksonomy")

Stickiness

• Syndication

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4.0: Core Concepts of Web 2.0
4.1 The Web as a platform
In the context of the Web, a platform is considered to be the building blocks of an application, web site or software. Web 1.0 established itself as the foundation for the internet and all other accessories that allow the user to interact continuously with the Web are produced based on the initial platform set by Web 1.0. ( Tim O'Reilly,2005

Figure 1: Shows a "meme map" of Web 2.0

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4.2 Harnessing Collective Intelligence
Collective intelligence emerges from the collaboration and competition of many individuals but on the internet can also be defined as a form of networking enabled by the rise of communications technology. This mainly constitutes to how well an organization can control its information on the internet and its ability to assemble knowledge from data residing in the Web. ( Tim O'Reilly,2005)

4.3Data is the Next Intel Inside
For all intents and purposes the tagline of "Intel Inside" applies to data because the data is now what drives many Web 2.0 applications. Another way to phrase it is to say that what intel does for computers is what data does for applications. Data is what makes Web 2.0 content usable for all. Consequently owning a unique, hard-to-replicate data source is a competitive advantage for a business. ( Tim O'Reilly,2005)

4.4 End of the Software Release Cycle
This pertains to 'Software as a service'. Software as a 'product' can never keep up to date with all the changing information. In the web 2.0 sense, we are dealing with code as well as data so the service concept keeps the data relevant (and the harnessed decision accurate) by accessing as many sources as possible. ( Tim O'R...

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