This organization has some good definitions of cyberbullying. Look here for definitions. Cyberbullying - ""Cyberbullying" is when a child, preteen or teen is tormented, threatened, harassed, humiliated, embarrassed or otherwise targeted by another child, preteen or teen using the Internet, interactive and digital technologies or mobile phones."
If you are in Florida you may want to join the edcamp spacecoast - an unconference open to anyone. Some great people presenting and participating at this event including Jerry Blumegarten and Silvia Tolisano.