What is Web 2.0

Our first day we talked about "what is web 2.0" which was some of us might thing this is an old story since
technology oriented person started to talk about web 3.0. However,this topic is quite interesting for me.
Why? Seriously, I had never heard about the word "web 2.0" before until I started my second master degree
here at ITEC,SFSU.

Although, I have been using social networking site: youtube,wikipedia,or blogs before, I did't know that
this kind of websites are called "web 2.0." So, what is web 2.0
According to wikipedia.org, "web 2.0 is commonly associated with web applications that facilitate
interactive information sharing, interoperability, user-centered design,[1] and collaboration on
the World Wide Web."

No surprise, this is about the same idea as what we talked about in our class(yes,because we have read
about it before form internet). But the most interesting thing is every group thought about it like a kind of
web site that users generate the content or user center. That's it.