It is essentially an increasing range of software that supports a variety of technologies for open and collaborative communication, learning and creativity.
It requires:
- a platform
- social networking
- read/write web
- social software
- gathering and sorting
For more information about what Web 2.0 really involves, some good basic, general information can be found at the Wikipedia website. I found this article useful in explaining the world of Web 2.0.
http://en.wikipedia.org/wiki/Web_2
I really like the colours of your blog – nice and fresh