Web+2.0

Web 2.0 is the way people now describe the communication abilities of the internet. Email, instant messaging, wikis, and blogs are all part of Web 2.0.

What is a wiki? You're looking at one right now! People use wikis to put together information. In the case of Wikipedia, anyone can go in and edit the stuff written there. Their changes must get past an editor.

...more to come.