• Be polite and courteous at all times. Remember that you're not communicating with a computer screen, but with a human being who has thoughts and feelings just like you. So, always think of the person on the receiving end of your messages.
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• Do not TYPE ALL IN CAPITAL LETTERS. IT LOOKS LIKE YOU ARE SHOUTING
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• Remember that the written word is hard to interpret. When you speak to someone, that person can hear the tone of your voice. If they can see you, they can take visual clues from your face and body to better understand your meaning. All of this is lost in text, and sometimes responses can come across as mean or rude, even when you did not intend them this way. This is the reason some people use emoticons (visual clues) in their e-mails, it saves a lot of confusion. 
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•  Be careful not to use rude or bad language online.
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• Don't break any laws. When you're on the net follow the same rules of behavior that you would in real life. Remember, if it is against the law in the real world, it is against the law in cyberspace.
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• Be universal. Other users have different Web browsers, different online services, different e-mail programs etc. So don't, for example, send out e-mail with text formatting -- boldface, italics, indentations, etc. -- because many other programs will not be able to read the formatting and the recipients will receive your e-mail filled with muddled codes.
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• Be brief whenever possible. No one wants to read through a lot of unnecessary information.
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• Don't flame. Do not send rude or offensive e-mails or postings. If you receive hateful e-mail, let your parents or teachers know.
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• Make a good impression. Remember that the written word is the only way you can represent yourself online, so spelling and grammar count.
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• Be patient with newcomers. Once you have become an Internet expert, it is easy to forget that you started out as a newbie too. Learning the rules of cyberspace is much like learning a new language; it takes practice, and includes making mistakes.
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