As mexxer-2 mentioned, so far they haven't paid something as small as 0.001 or whatever it was which should be nothing to them as they've paid out hundreds of millions, or so they claim.

The 3x deposit bonus is so you deposit a lot & end up losing your original amount trying to get the x888 rollover forgetting that you were on a bonus.

I've used this site & used the No Deposit Bonus, made it to 100% and got banned for multiple accounts.

So let's see,
1: Doesn't pay out as often as it says.
2: Fake bonuses (No Deposit Bonus)
3: Super high house odds, lying in the advertisements.
4: Bad staff support. They use a fake female name, speak in a way that you can't understand and basically force you to deposit.

Overall, I wouldn't trust this site with a cent.