The issue with online casino bonuses is that they may not ultimately contribute to your earnings. While there are players who abuse bonuses, they are ones who have been in the business of gambling for a long time. Beginners aren’t as experienced or as lucky. It might all come to waste, and since we are dealing with casinos, even if it is online, the player is still playing games based on chance.
Evidently, examining the wagering requirements of bonuses would yield good things to a player not only because he or she would gain more know-how on gambling, but he/she can determine which online casino to trust.
As most online casinos give bonuses as incentives to welcome newcomers in the halls of gambling, beginners are urged by many articles to read about wagering requirements of bonuses and related terms and conditions applied to it. Doing some research now helps a lot in gambling responsibly.
So the question remains: can bonuses be there to actually benefit the player or is it some malicious ploy by casino managers to trap gullible gamblers?
Bonuses should be taken cautiously, even if you can afford to follow the wagering requirements. For example, a free spin bonus would be a good thing to try out, but it has restrictions like a limited time period, after which you are only allowed to take home the winnings, if any, but not the initial balance given. If one thinks this is worth it, then go for it.
Sometimes high bonuses are given by games with high house edge. Welcome bonuses for Keno may not be so appealing. Keno is a less popular game than other casino games not without reason: it is difficult to win. And with any initial amount you have might just be used up worthlessly.
While welcome bonuses get much attention, other types of bonuses still pop up. Refer-a-friend bonuses are given to those who are leaving the casino and have friends invited by this player. Other types are free-rolls where a player can participate in a tournament for free, and thus, hopefully keep the prizes. And there has been news that some players are only willing to play these bonuses and can keep up their earnings.
Obviously, bonuses are still very much on the grey side: in the latter case, those players of free-rolls know what they’re getting themselves into. And that’s probably the best advice in availing any bonus: knowing what you are getting into, then you can be sure that the bonuses offered can actually increase your earnings, not just provide some pain in your wallet.

