If the casino has a current signature campaign that's managed by a trustworthy manager, then there's a higher probability that that casino is not a scam. Managers usually stop representing them when they start becoming scams.
Well, being an active casino campaigning on Bitcointalk is a very good layer of trust, nevertheless, with my sincere experience so far, it still does not save anyone entirely. Mind you, this is not a matter of those casinos being a scam, they are often running a legitimate business, but in the cause of running such a legitimate business, there could be some cheating and excesses, this is what we are talking about.
And Bitcointlak or not, there are accusations that have been resolved and there are some that have not been resolved, and will never be resolved. What should we call that? I hope casinos are fair/sincere with their customers and have valid proof if at all they restrict or sanction their customers for any reason whatsoever.