Why would a site scam people for a couple of hundred bitcoin or whatever is held on a site at one time when said site can earn themselves thousands of bitcoin over a number of years.
That's the question you ask if you're questioning a site.
Some brand new sites may scam that have cheap websites etc.
Da Dice is a good site & they've put a lot of time, effort & money into it.
To scam and run off with coins at this point in time would be counter productive.
I'm done on this subject any way.