Just like any other business, online casinos have to fight the competition and thus need promotions. The primary tool that online casinos use for promotion is bonuses that come in a number of types and packages. online casino bonuses like free spins are one way of the casinos to promote and retain their player’s base. While free spins are pretty alluring, they can be as intimidating as hell. They affect your deposit significantly and thus understanding them to the core becomes very important. You need to know what type of free spin you have got, how to wager them ad what will be the reward. This will help you value the bonus in the offer.