I started covering internet safety and cyberbullying today with my 3rd and 5th grade students. I forgot how many good recources are out there for classroom and home use. Check out the links below. If you have any more sights that you like add them in the comments section.
Doctors Should Ask Kids: Are You On Facebook?
NetSmartz - This has lots of videos!
Stop Bulling Now - This sight is more on bulling in schools but still a good tool!
My Online Neighborhood
The Pules: Cyberbullying - This is a pod cast from The Missouri State Teachers Association