Lack and the others basically want everyone to have an enjoyable experience. The rules are set so that everyone can have a good time/ The moderators and hunters are very careful when searching for secret alliances.
Most people who break the rules, will break it more then once, and typically don't care about the enjoyable experience the others may have had had they not broken the rules. These guys are eventually busted and many are banned from CC. The important thing to remember (And I think the mods will agree with me) is that the other players should have a good time that they would not accuse you of SA. Ignore the sore losers who accuse you of such and play the game the way it was intended to be played (to have fun). Talk with your opponents (nothing wrong with this). Be a good sport when you lose and gracious when you win.