In the tradition of the Internet, I have appropriated others' hard work for this list. When sending messages to a mailing list or a newsgroup, please keep the following suggestions in mind. They will help keep the group user-friendly for everyone. Keep each line in your message shorter than 70 characters.
Longer lines can cause problems with some e-mail systems.
When replying to another message, try to refrain from quoting entire messages. Paraphrasing or quoting selectively are both kinder to people's eyes and e-mail boxes. Because it can be difficult to interpret e-mail addresses, you are encouraged to include your institutional affiliation. Long signatures are discouraged. Some folks tire of the time spent having to skim over them.