Do not tell your opponents their out-numbers or suggested strategy while they are at the line.
Do not swear or raise your voice (no outbursts, yelling or screaming).
Do not throw your darts or hit the dartboard in frustration.
Do not complain about the opponent you are throwing against.
Any unethical conduct, abusive language or poor sportsmanship may be grounds for forfeiture of a
    match, and possibly expulsion from the league or tournament play. Local league and tournament
    managers may rule on this at their discretion.The Passionate Darter abides by these decisions in
    the spirit of sportsmanship.
When playing in a blind-draw, bring your own darts or use house - do NOT assume you will use your
    partner's darts.
Do not assume you will diddle or go first, instead discuss and agree on this with your partner before
    the match is to begin.
Be aware of the toe line and do your best not to cross the line while throwing.
Stand behind the line when your opponent is throwing, and if off to the side, remain behind the area
    of the line and out of the thrower's peripheral vision.
When playing steel-tip darts, be sure to chalk your fair share for your fellow darters.
When playing steel-tip darts, be sure to announce your score to the chalker before pulling your
    darts.
When playing electronic darts, it is the darter's responsibility to make sure the electronic board is
    ready for you to shoot your turn. With the newest electronic boards, the sensors are very good and
    it is rare that you'll actually have to push the button. With older machines, you may have to press
    the "Enter" or "Player Change" button to manually move to the next player. In a worst case
    scenario, the darter may throw a dart and when the score doesn't register, realize that the board
    wasn't set to the next player. Many darters blame the previous darter for not making sure the
    "button" was pressed and fist fights have broken out over this. It's unfortunate when a dart is thrown
    and doesn't register because the game didn't move to the next player. This dart, of course, does not
    count and time and time again this is often a pretty good dart. Yes, this is unfortunate, but
    ultimately it is YOUR responsibility, when YOU are standing at the line, to make sure the electronic
    board is ready for you to take your turn.
Be on time for matches.
Do be enthusiastic toward any dart player you are paired up with in a blind draw.
Do be a team player and help coach others on the strategy of the game when asked.
When there is a game in progress at your local pub, which is not part of a tournament or
    league play, whoever is playing on that board owns the board. The etiquette-wise passionate darter
    may challenge whomever owns the board to a match. The winner(s) of that match then owns the
    board.
Do act with grace during and after a match, whether you have won or lost.