What is web 2.0?

what is web 2.0. I am UI designer, I use to make site with "DIV" tag and CSS ie table less site. Is this is a WEB 2.0 or something diffrent.


I want detail about web2.0, anyone has a detail idea or rules known

What is web 2.0?
Web 2.0 is generally characterized by web pages that run asynchronous scripts (Javascript, Flex or others).


The scripts usually requests user specific information from the server to render the page.


These information are usually returned as XML (or now, it is also common to return as JASON objects), hence the term AJAX is almost used interchangably with Web 2.0.





AJAX is Asynchronous Javascript and XML, but now, we use it to mean more than just that, and includes Flex and JASON.





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





In a way, it has nothing to do with the UI layout design, so the use of DIV and CSS does not make a web page Web 2.0.


It is the scripts and the asynchronous communication with the server that makes a web site Web 2.0.





Examples of Web 2.0 : Yahoo Mail, Yahoo Map.
Reply:What’s it all about? Authentically, Web 2.0 is a phrase given by O’Reilly Media, referring to the professed notion of second generation of Web based societies and hosted services such as folksonomies and social-networks which aim to allow interaction and sharing between like-minded groups of users across the web. Or at least that’s the theory. However, If you really want the scoop on question like... Is this actually new technology? What was wrong with our old web, how does this really work and is there some style or elements where of it may be said, see this is Web 2.0? Read this article I wrote just recently http://foamers.net/blogger/archives/82