[emrekzd]

The term "Web 2.0" is an unfortunate choice and as a consequence it has been rarely used correctly. Funny enough I've been to a Web 2.0 Conference about 10 years ago where almost every speaker used it incorrectly.

Web 2.0 has nothing to do with a technical revision or change in the Web. It was used by Tim O'Reilly back in 2004 (and became popular) and refers to the rapid change in the way the web is used, more specifically the switch from static web to user generated content.

I'm sorry but your forum is all about UGC, and AJAX has nothing to do with Web 2.0.