Web 2.0 definition

I was on the O’Reilly Radar home and clicked over to the Web 2.0 page: http://radar.oreilly.com/web2/. At the very top is an interesting and refreshing definition of Web 2.0:

“…..Web 2.0 is a transformative force that’s propelling companies across all industries towards a new way of doing business characterized by harnessing collective intelligence, openness, and network effects.” 

I really like that. Web 2.0 is not about technology or AJAX or video sharing or blogs. It’s about:

a) collective intelligence;

b) openness (which I think goes hand-in-hand with collective intelligence); and

c) network effects (a wide, easily available, easily accessible and open network makes the collectivness and openness possible).