My guess is that Tynan probably used sign up bonuses in order to gain a positive EV. He would keep creating new accounts, playing until the sign up bonus was depositable in his cash account and then close up for the day. Maybe do 2 or 3 accounts a day or more. That's my guess. Unfortunately, these days it is much harder to do this then it used to be because casinos have started employing countermeasures. Just as card counters had their day in the sun and then got cracked down on, so did gamblers like Tynan. It's probably still possible to do what tynan did, however you will be spending a lot of time outwitting casinos and avoiding detection, just as card counters do now a days. It's probably still possible to be profitable doing so, but the amount you will get per hour spent outsmarting casinos is probably so small that your time is more valuable in most other jobs. Plus most other jobs don't have the potential threat of being shut down by either smart casinos or law enforcement (I'm not saying this is illegal now. I am saying that out of all the potential money-making activities out there, this is one that law enforcement would look closely at). I'd guess that the time for this has passed and people would be better off finding something else to do to make money. If you still want to gamble, count cards at blackjack, it's a proven method. Or play poker, because you're not playing against the house. Then you just have to outsmart the other players. The online bonus gig is up. Probably too much trouble to be worth it anymore, and the casinos are going to make it even harder to make money that way if it's at all possible for them to do so. If you're going to spend that kind of time, you could just as easily master a sales job or a trading system or something else which is worth a lot of money as well.