This is out of Robert's Rules of PokerPOKER ETIQUETTEThe following actions are improper, and grounds for warning, suspending, or barring a violator:Revealing the contents of a live hand in a multihanded pot before the betting is complete. Revealing the contents of a folded hand before the betting is complete. Do not divulge the contents of a hand during a deal even to someone not in the pot, so you do not leave any possibility of the information being transmitted to an active player.