What are the most important elements of a Web 2.0 site?

i think AJAX is one of web 2.0 element


you can learn it from http://www.w3schools.com/ajax/default.as...

What are the most important elements of a Web 2.0 site?
Here are a couple of articles on "Web 2.0". The main point of web 2.0 is that people communicate instead of static html.
Reply:the audience providing or creating the content .





I.E. Flicker or youtube or fark

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