I don't play online casinos much at all, because of the obvious credibility concerns. But being I play poker at Bovada, they offer a Tuesday match bonus where they'll match 100% of your casino chip purchase, and you need to do a 40x rollover before cashing out. Standard stuff. So on tuesdays, i like to play one of their video poker games that has a 99.95% payback to the player when played at optimum strategy (not hard to do). So getting a 100% match of your money in a 99.95% payback game with a 40x rollover should be +EV for the player. Now, of course, with variance, one can expect to lose even with that match, but one should never expect to go broke on a 100% matched deposit before your 40x rollover TEN TIMES IN A ROW on a 99.95% payback machine. Thats exactly what happened to me, had the purchase and the matching bonus lost before 40x rollover TEN TIMES IN A ROW on a 99.95% payout machine. Do you have any idea how improbable that is? I waited patiently each losing week, waiting to see if I could reach 10 weeks in a row before saying a thing.
So either I'm just REALLY, REALLY unlucky to have this occur (probabilities in the millions), or there's something not quite right with this machine played on tuesdays.(or any other day perhaps)
You can make that decision for yourselves. I've made mine. And let's just say they could offer a 500% match bonus and I won't be participating in their casino anymore. EVER.
Then again, with the payout problems they've been having lately, I guess it really doesn't matter much.