All rules of normal spleef apply.
Matches will be Best of 3
Only play your matches if someone is there to watch the match and verify your result. (I'll make a thread for you to post results in) So only do it if me, wobL, CynicalCondor or someone else trustworthy is there to witness the match.
I'm not setting specific times that you have to play your matches (agree amongst yourselves the time of your match).
If your opponent is invisible then tell them that and they need to relog in to the server so that they are visible to you.
If a person has a serious lag that makes it impossible to play then rearrange the match.
Extra PvP rules:
If you kill your opponent by using PvP, the round will be restarted. Do it a second time and you will be disqualified.