Yes, that's a good way to know about any website, if you put scam after the name of the website (Whether that is gambling or any other) you'll get scam-related results from google and then decide whether it is worth using or not.
I don't agree this is always a sure way to know whether one services is legit or not. Just write the term "Bitcoin" and the word "scam" will appear after it automatically as one of the most relevan suggestions.
I would suggest to dig a fit further via reddit, more than via review websites that may not be sincere, or via bitcointalk preferably, where one can find a serious, competent community.