This means keeping email messages as brief as possible and when replying to an email message do not include the original text unless you need to for clarity, and trim it as much as possible. Signature files longer than four or five lines are usually considered excessive. Avoid starting flame wars. A flame is when a user makes an angry response to a message from another user. A flame war is when many people engage in sending flames to each other.
Flame wars are to be avoided as they congest the Internet and can upset people.
Give brief but informative subject lines. A subject line that is brief and to the point can save those not interested in a particular topic a lot of time and frustration. This is especially important when sending mail to discussion lists. Respect other people's privacy. Internet users have the right to petition the relevant local access provider to cancel a user's account for breaches of netiquette.