I am not in the know there and I am not going to condemn or promote them either way, but I do want to try to clear the fud about this. The pool reward is pps so blocks are not necessarily paid at a 10% loss based on luck. PPLNS would be that way. If they have a trick or they think they have a trick to stay ahead of luck then it works until it falls apart and in the mean time I am happy with these rewards.