What do you know about web 2.0?

hi friends, please tell me all about web 2.0. All its features and top sites which are compateble with web 2.0.

For the most part the term "Web 2.0" is what people are calling the proposed upgrades to the core of the Internet. Much of it deals with the way computers talk to each other and how the information is being passed and tracked. For email, it means that you'll be getting less spam. Since any email sent has in the header code the name and address of the server that should have set it. A server that gets an email will then read what server "sent" the email and then ask the sending server if it really sent the email. If the server responds "yes" the mail shows up in your box. If the server responds "No" the email is deleted. A very simple and easy way to remove spam. However, currently not everyone supports the proposed changes so things haven't moved very far into "Web 2.0."

don't look like it means much of anything.
http://en.wikipedia.org/wiki/Web_2

We're "web 2.0" I've met John Battelle in person...does that count? (he coined the term web 2.0.