DON'T ABUSE YOUR POWER
Just like in face-to-face situations, there are people in cyberspace who have more "power" than others. They have more expertise in technology or they have years of experience in a particular skill or subject matter. Maybe it's you who possesses all of this knowledge and power! Just remember: knowing more than others do or having more power than others may have does not give you the right to take advantage of anyone. Think of Rule 1: Remember the human.