@abge: I do not believe the different sides are necessarily a Mafia/Not Mafia split, but rather of play style. A conservative Mafia player, would see, as you said that if no one dies, that means they don't die, and vote no one. However, a risk taker might be willing to gamble on the 72% chance of killing a townie and 17% chance of killing a cop, medic or vigilante, and vote lynch. Also, I have an idea for the vigilante, I suggest that they focus on finding the serial killer, as he will be pretty difficult to catch on purpose, unless we have someone actively focusing on him.