I don't really like the No Lynch because really it doesn't help the town out. It only prolongs their life until the Mafia pick them off one by one. Towns biggest asset is information, while the Mafia's is silence. A no lynch vote doesn't get people talking, reacting, and Mafia is able to sit back and watch the townies destroy themselves. Put a vote out however and you will see human nature play out. People will defend themselves, people will start asking questions, and this is bad for the Mafia. That is why they often will go with a no lynch vote, also they are safe if it is a no lynch situation where town is never safe. The more people get talking the better chances of hitting Mafia you have. No lynch is the vote of silence.