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.
It's not a layer of trust. It's merely an indicator that, CURRENTLY, the casino is still good with the community and that none of the scam accusations, although some of them are real issues, make the casino a "scam".
Because simply, it's very easy for an emotional loser to make a new account in BitcoinTalk and start a thread accusing a casino of scamming him/her.
That's somehow good indicator at all but it doesn't tell everything since we also encounter a supposed to be reputable casino with running a signature campaign pays good to their participant turn into a scam. That's why we should look for their current activities done to avoid getting compromised if there's sudden changes especially for the service they provide to their gamblers.
In the case of those sore losers its easy to determine if their accusation is valid since usually they don't have proof to show and what they want to spread is just pure hoax and their intention is to create trouble to the community, because they want to take revenge on he losses they get for playing in those casino. if people have tendency to do those crazy actions much better for them to stop participating on gambling activities since its like they can't handle well their losses since they can't accept the fact that they are the one who made a mistake on why they lose their money.