This is a radical idea. When i first read it I though "no way" but the more I think about it, the more I have warmed to it. I don't know if a .1 SP fee would work, but maybe .01, and even that small amount would stop a lot of spam from being produced. The idea of paying a fee to interact is tough though, I certainly do most of my posting through commenting on others posts, so if I commented 100 times throughout the day, that would leave me down $10 SP (at the .1 SP rate). If I am spending my time interacting with others and also losing money, I don't know how long I would continue doing it. Interesting idea though