What is a scam, not what you are taught, but what you 'know'?

someone says 'all dating sites are scams' or 'for the feeble-minded' but they are simply repeating what someone supposedly wise said. do you as factual content know that women in the ukraine are not beautiful pure caucasian women, and in general take great effort to make a salary. not because someone 'said' but you know as a fact. please facts only no cynic without a brain for him/herself.