There are different reasons as to why casinos offer welcome bonuses. Still, the top of the list is because this is the most effective way of having more players sign up as members. However, casinos are also alive to the fact that new entrants need to have a feel of how things work and therefore giving welcome bonuses allows punters to have the first-hand experience without putting in any money. As in any business, the first encounter plays a vital role in determining if a player will continue playing on that particular casino or not. A welcome bonus is an integral part of online gambling.