I am just an amateur gambler and bet on sports. i saw this thread today on the forum of a tipster ajaxmoor and he is destroying his picks. i think he has more than enough wins i have ever seen in a row. If tipsters can predict games like that how are sportbooks not losing money ? is it just luck ?
Tipsters cannot make a sports book bankrupt. If you are mostly worried about that, a gambling site will not start his business operation if he doesn't have foreseen this type of situations. They have back up funds that will provide them to have assurance if there are some good tipsters that are winning. And besides the lose of other gamblers are just circulating there.
Also even if tipsters have good reputation and are able to predict the result of games with some accuracy you still need to take into account that not many people are going to want to risk their money on the advice of a person they dont know so the influence of tipsters is a lot more limited that we may think at first, so it is very likely casinos dont worry too much about it.