Slot machines that are played at casinos are called "slots" and what most people call "online slots." Slots are a form of gambling. You bet or wager your money on a slot machine and you don't get the ball to spin all the way around the reels - you only get to see how the ball is spinning when it stops. It sounds easy enough, but playing slots online can be a little bit trickier than playing them in a casino. The reason why playing slots online can be a little bit trickier than playing them in a casino is because the reels of the slots are not stationary. They keep going, one after another, so you have to keep paying attention to where the ball is. It's easy to become impatient when you are waiting for the ball to stop and when the reels do stop, it is sometimes hard to know which way the ball is spinning. This causes a lot of frustration for online gamblers and many of them give up just before they win. There are a few online slots sites that have been est...