Democracy does not work. A random fluctuation in tone will be picked up by other users and the entire tone will move in that direction. Even the flagging would

Democracy does not work. A random fluctuation in tone will be picked up by other users and the entire tone will move in that direction. Even the flagging would go the same way. You have to create a sort of elitist system (like wikipedia), where the flagging is controlled by the model citizens, and people who are not flagged for a while then become model citizens, further propagating the model citizen mode. This way, a large change in the demographic of the site would not change the demographics of the elite, and after a while, the elite would swing things back to go their way, as they have more power than the masses.