Slot machines are one of the most discussed games by casino patrons, and for many reasons. They are the most popular casino game, making up nearly 2/3 of the casino's profits. They are flashy and catch the eye immediately upon entering the casino. Finally, they are mechanical, and people have the habit of not trusting things of a mechanical nature. It's easy to imagine that the slot machine is somehow programmed to cheat you out of your money, and many people will claim that to be true, regardless of how often the state checks the machines.
One of the biggest common misconceptions among slot players themselves is that the slot machine will hit more often if you play the maximum amount on the machine every time. While the casinos would love for you to believe that story, it simply isn't true. The two factors simply aren't related. Play what you're comfortable playing. Granted, playing the max will heighten the jackpot, but not the chances of hitting on it.
Another story that has circulated for years is the idea that putting a comp card into the slot machine alters the payout percentage. Again, this simply isn't the case. The payout percentage is set by state regulators, and there is no optional button to change it if someone plays with a comp card. Just relax and play your game. If you win, it was meant to be. If you don't happen to win, it's not anyone's fault, just walk it off and try again later.