10 Core Netiquette Rules, excerpted from Netiquette by Virginia Shea

Rule 1: Remember the Human

Rule 2: Adhere to the same standards of behavior online that you follow in real life

Rule 3: Know where you are in cyberspace

Rule 4: Respect other people's time and bandwidth

Rule 5: Make yourself look good online

Rule 6: Share expert knowledge

Rule 7: Help keep flame wars under control

Rule 8: Respect other people's privacy

Rule 9: Don't abuse your power

Rule 10: Be forgiving of other people's mistakes

For more details, go to The Core Rules of Netiquette

See also

"Netiquette" in Online Courses, Carleton University

Netiquette: Ground Rules for Online Discussions, Colorado State University