As a Web 2.0 (huh?) company, I am frequently asked by people what Web 2.0 is all about. The people in India ask me in Hindi (as in the title of this post).

Web 2.0 is many things - the second coming of "the web" after the fascinating "no revenue, lot of funding" bust of 2001, a platform , a connected network of applications that on their own and collectively transform how we do what we do - and none of these things.

Perhaps the most comprehensive and satisfying (ahh) explanation is Tim O'Reilly's from his Web 2.0 conference in 2004.

Here is a Link - http://www.oreilly.com/lpt/a/6228