Netiquette

Netiquette is an important tool used when communicating on the computer through email, wikis, podcasts, and other types of online communication. It is a form of manners that is followed in order to be professional, respectful, and courteous to others.
The following are some guidelines for practicing netiquette.

Be conservative in what you send and liberal in what you receive. Keeping your emotions under control in an email is a very important skill that will keep other people from thinking you are insensitive and insulting. All caps is considered impolite. On the other hand, don't expect people to be the same. Be ready to handle people that send angry emails, just not in a way that evokes a fight.

Keep your emails short and to the point. Avoid acronyms like "LOL" and "BRB" because they make you look unprofessional. If you have been the only one addressed to read the email, it is understood that you will take action so there is no need to go into great detail of explaining what you will do. Also, include a signature at the end of the email that includes your name, title and other contact information. This way, if the person whom you are emailing ever needs to contact you in another way, they have the information to do so.

Finally, proofread your message. Check for grammatical and mechanical mistakes. These mistakes make you look unprofessional. Also, consider what you are sending and ask yourself, "can this come back to haunt me?" Anything too personal should not be sent over an email.

http://tools.ietf.org/html/rfc1855

http://www.swref.com/story/20090705/the_rules_of_netiquette

http://edition.cnn.com/2000/TECH/computing/07/21/netiquette.tools/