Since I knew Bitcointalk, I have never bothered to search casino reviews in any other site because this forum does not only offer an opportunity for casinos to advertise, its trust system is also a check for casinos. So, while foul play might happen in random social media, but if it's this forum, you are safe if you pay attention to the trust system and the Announcement thread of the casinos.
This doesn't mean that there are no bad actors, but anyone who is more than a year in this forum will absolutely see red flags.
Well, the thing is that in bitcointalk, you will get true feedback for the casinos, especially for those who have the ANN threads listed there. People will discuss about those casino and if there are problems at any casino, you will find people discussing extensively about it. If the casino is giving good service, then also you will get the feel of it by the way people are discussing it positively about the casino.
Since the forum is designed in a way that you will always get a true reflection of the casino and there is no way anyone can put fake reviews and even if someone tries to do it, it can be easily noticed, as everyone is free to talk and discuss.