This is an example how to have fun gambling. Until you are doing it for fun, you will be OK. But it depends on person's self-control. When you get a big win, you could think "hey, I could make money with this". And when you start thinking like that, it's game over for fun.
For this word, "hey, I could make money with this", I've done that in a few years ago but that doesn't make me win more money, but coincidentally, I have to get lost the money. After thinking for a while, I realize that word can be a trigger for a gambler to feel that he is superior and unbeaten in the gambling, so that can attract him to play longer with more money.
Thus, after that experience, I never tried to follow that word again because that could I makes me lose the money, and I cannot enjoy my winning money. From that moment, if I win or lose, and the time is enough for me to playing gambling, I always stop gamble and leave the sites because I don't want to get more losses.