This is an excellent article that has been reposted. It includes a lot of the information that outlines WHAT web 2.0 is. This includes videos and many important hyperlinks. Excellent article for newcomers to web 2.0 to pick up on.
Blog It lets Facebook users create blog posts and post them through any one of 10 blogging services, including Blogger, Movable Type, TypePad, Twitter, Vox, and WordPress.
Places to get an Open ID -- this important technology allows people to have one user ID to log into many sites -- and because it is a distributed ID -- you can keep using it even if your main site dissappears.
I just asked for an invitation to aviary -- a suite of web based applications for images, typography, music, 3d images, video, and all types of artists. Fascinating site.
This fascinating website gives really cool tools to edit all kinds of things. This is a great idea and something to take a look at in terms of free and open web apps.
Youth twitter site where students are usingtwitter to communicate with one another in short 140 character bursts. I always see fascinating things here.