1 - Thou art a fanfic writer, not God. Unless thy name is Roddenberry (or Carter or Weisman) thy stories are not canon, nor are the characters all thine own. Disclaim them as such.
2 - Keep the newsgroup holy; do not repost thine stories each week. That is the purpose of the archive.
3 - Thou shalt not take the First Amendment in vain. Thou dost have the right to express one's opinion. One doth not have the right to do so simply to cause a flame war.
4 - Honor thy spellchecker and thesaurus.
5 - Thou shalt not release a story that another hast not proofread.
6 - Putting thine friends and thy self into thine stories can be vastly entertaining for all. Telling the world all thine fantasies through thy character is a little disturbing. Telling thine fantasies about thine friends through thy character could be grounds for stalking charges. Use thy best judgement.
7 - Thou mayst commit adultery with thine characters as thou might please, but thou shalt post a "Mature Readers Only" warning.
8 - Thou shalt not use another author's characters in thine stories without permission. Ever.
9 - Thou shalt not play in another author's (or authors') universe without permission. Ever.
10 - Feedback is thy greatest friend. Learn to both give and take it constructively, and thou shalt live long and prosper mightily.