Batman,

Good point.  However, you will be able to deduct expenses when you have LLC in the US.  And even after expenses and taxes income could be lucrative for some people, who likes taking risk.  Yes, you are right about scams and schemes people may pull on you, so you have to be careful. I on the other hand trade my own money, but some of my friends and family have asked me to trade for them.  Keep in touch.  I am coming to UK in May.