Actually, freebitco.in makes ~$1,800 USD worth of bitcoin every day! ...
How do you know that? Source?
not them paying out, they're multiply game, i loose very quickly betting at very low risky nearly every time it's like getting hit by a car 10 times everyday.
What do you mean by very low risk? Then don't allow you to play below x2 multiplier, so you cannot play with chance to win over 50%.