When scamming, they will most probably get reported and if it's severe, they will be banned forever or ip banned. So they can't play anymore, and don't you think they are stupid for doing this?
And as for the trolls, they are just there for causing troubles, and most of them look like they don't have a life (eg noblem). Why are they torturing others? I guess they all are sadists, and trying to make users appear overly emotional and foolish in some manner.
These guys don't even contribute anything to the society or atleast it will be better if they step out.
What do you think about these guys?