If there's a gambling website which accepts Bitcoin they HAVE TO open an announcement & support thread in Bitcointalk. Look I don't say they "should" but they "HAVE TO". Otherwise that site is %99 scam and I wouldn't play in that site.
Sometimes websites with topics on bitcointalk can be scams...
Yes, very true. But you are really referring to the Investor's based games subsection in gambling. They are all scams.