When I was still playing there, I told him to start a referral campaign, so that it would grow bigger... he always said, "it's coming" .. now it's gone.
He could also have placed some ad's on the site to cover his hosting costs.
Someone possibly got a way to cheat and emptied his bankroll? Things like that happen, and then the site close like that without notice. {Even then, he could still get investors to fund it and close the holes}
I agree.
I actually wanted to help him with a signature campaign, he said he would start one but he paid only like 1 user for 1 week and then stopped.
And I agree with you either there was a hacker, cheater, or someone really lucky who just empied the sites bankroll. Either way I say the failure was due to lack of advertisement.
Now even if he comes back, there will be absolutely no trust.