What is web 2.0?

http://www.oreillynet.com/pub/a/oreilly/...

What is web 2.0?
Web 2.0, a phrase coined by O'Reilly Media in 2004, refers to a perceived second generation of web-based services—such as social networking sites, wikis, communication tools, and folksonomies—that emphasize online collaboration and sharing among users. O'Reilly Media, in collaboration with MediaLive International, used the phrase as a title for a series of conferences, and since 2004 some developers and marketers have adopted the catch-phrase. Its exact meaning remains open to debate, and some technology experts, notably Tim Berners-Lee, have questioned whether the term has meaning.





Tim O'Reilly provided a compact definition of Web 2.0 in 2006:





"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."





The bursting of the dot-com bubble in the fall of 2001 marked a turning point for the web. Many people concluded that the web was overhyped, when in fact bubbles and consequent shakeouts appear to be a common feature of all technological revolutions. Shakeouts typically mark the point at which an ascendant technology is ready to take its place at center stage. The pretenders are given the bum's rush, the real success stories show their strength, and there begins to be an understanding of what separates one from the other.





The concept of "Web 2.0" began with a conference brainstorming session between O'Reilly and MediaLive International. Dale Dougherty, web pioneer and O'Reilly VP, noted that far from having "crashed", the web was more important than ever, with exciting new applications and sites popping up with surprising regularity. What's more, the companies that had survived the collapse seemed to have some things in common. Could it be that the dot-com collapse marked some kind of turning point for the web, such that a call to action such as "Web 2.0" might make sense? We agreed that it did, and so the Web 2.0 Conference was born.





In the year and a half since, the term "Web 2.0" has clearly taken hold, with more than 9.5 million citations in Google. But 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.





This article is an attempt to clarify just what we mean by Web 2.0.





In our initial brainstorming, we formulated our sense of Web 2.0 by example:





Web 1.0 Web 2.0


DoubleClick --%26gt; Google AdSense


Ofoto --%26gt; Flickr


Akamai --%26gt; BitTorrent


mp3.com --%26gt; Napster


Britannica Online --%26gt; Wikipedia


personal websites --%26gt; blogging


evite --%26gt;upcoming.org and EVDB


domain name


speculation --%26gt; search engine optimization


page views --%26gt; cost per click


screen scraping --%26gt; web services


publishing --%26gt; participation


content


management


systems --%26gt; wikis


directories


(taxonomy) --%26gt; tagging ("folksonomy")


stickiness --%26gt; syndication





The list went on and on. But what was it that made us identify one application or approach as "Web 1.0" and another as "Web 2.0"? (The question is particularly urgent because the Web 2.0 meme has become so widespread that companies are now pasting it on as a marketing buzzword, with no real understanding of just what it means. The question is particularly difficult because many of those buzzword-addicted startups are definitely not Web 2.0, while some of the applications we identified as Web 2.0, like Napster and BitTorrent, are not even properly web applications!) We began trying to tease out the principles that are demonstrated in one way or another by the success stories of web 1.0 and by the most interesting of the new applications.
Reply:Here are a couple of useful articles which go some way to explaining Web 2.0 to the confused!





http://www.trginternational.com/content....





http://www.trginternational.com/content....