Netiquette
The term netiquette is a blend of network and etiquette. The term refers to rules of politeness for online
interaction. Please read the short list of tips below.:

Be sensitive to others.
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Don't use all caps. It is the visual equivalent of screaming.

Don't flame. Flames are emotional outbursts.

Think before you post. You can't take it back.

Don't use offensive language.

Use clear subject lines.

Don't use abbreviations or acronyms unless everyone knows them.

Be forgiving. Anyone can make a mistake.

Keep your exchanges polite and professional.
Here are some links to other sites for information on netiquette:
Langara's Policy on Email
UBC Communicating Online: Netiquette
SFU's Online Protocol-Netiquette
BCIT's Online Course Etiquette ("Netiquette")
The Core Rules of Netiquette