Check out this website!
I am telling you now...this is dangerous! You can easily get lost here with learning about all of the cool things people are trying as they bring Web 2.0 to the classroom. Thanks Teaching Heart for recommending it to us. Feel free to share anything you learn!
From the site: "Welcome to Classroom20.com, the social network for those interested in Web 2.0 and collaborative technologies in education. We especially hope that those who are 'beginners' will find this a supportive community and a comfortable place to start being part of the digital dialog."