docs.google.com

GoogleDocs media type="youtube" key="FCJFgieFxfU" height="315" width="560"

Advantages: Live Collaboration Easy navigation toolbar Can make private Cool! Fun!

Weaknesses: Not very colorful Kind of outdated Crashes Times out

I give this site a 4/10 because it crashes too many times for me and is a bit outdated; I really like the live collaboration though!