Several hundred (even thousands) sites claim to be part of the growing web 2.0 world.
What is the nature of these sites? Sharing, aggregating, rating, posting, communicating... They are all about people and what they want to do in the web.
BUT, and there is a big BUT, will these sites ever reach to an economic success? I doubt it.
Some of them will be bought but some giant - Google, Yahoo, Microsoft.
Some of them will gain success in leveraging their traffic into cash using one or another advertisement model.
Very few of them will bring a new message, a new approach.
For me, the next approach will be to connect the on line experience to the real world. To create a complementary experience to the real world experience.
It can be a complementary shopping experience, complementary sports experience, complementary learning experience.
We are living in the real world. The on line world we are experiencing can be very tricky. It is yet not the real thing (Until we will meet in the matrix again...).
Web 2.5 will be the complementary service world, and Web 3.0 will be the combination between the real world and the online world, which will act in synergy.
I will not cover any sites here, yet I will mention some. Those I will mention will be sites that will offer the next step.
For those who want a web 2.0 cover , I can recommend
TechCrunch