i have a friend who used to suscribe to this arbitage software stuffs, where you can make use of it bet on aLmost aLL sporting events via the back & Lay method; but then the outLay is huge and the margins v thin.In the Long run, he decided to discard it..i went thru the plates offer by sgpools and what i conclude is that there is no way that you can even make few dollars from them. in uk, there is betfair and betdaq where you can back and lay, making from the differnce thrua method call scalping or arbitrage, but in sgpools, there is no way at all. if you can make from it, it's mainly from luck. and if you can make constant profit from sgpools, you are probably involved with the rigger!:p