I do not like gambling very much but I see that gambling online is fairer than traditional gambling.
when you join the gambling online , you can get big bonus and interesting reward from casinos.
Well, they have to do something to promote their casinos. If you do not give bonuses, I doubt that someone will know about your casinos. This method increases the reputation for casinos and makes them more popular than usual. In real life gambling, we do not see this way of advertising much because you can not force someone abroad to access your local caisno LOL