Today an overwhelming majority the majority of online casinos give free bonuses to their players, both on the first deposit, and on the subsequent winnings.   
It is not a secret that all loyalty programs are created introduced for keeping players in the casino. 
However the gambling-house the casino administration  never forgets about their own benefit. Offering a bonus in the form of prize-winning money chips, the casino, as a rule, enters an extortionate  favourable for the casino  algorithm of winning back each gifted dollar. 
All know  it is not a secret that, the law of large numbers is always on the casino side, therefore winning back bonuses can bring the player to ruin. 
Today rates of winning back bonuses in various online casinos fluctuate from 1:10 to 1:30, which as a matter of fact is the latent mechanism of depriving too trustful players of money. Moreover, in some gambling houses there are rules according to which if a client refuses bonuses after the charge, all prize of the client is written off from the account. 
The most democratic liberal  online casino for today are GrandCasino, 21nova Casino, 888 Casino, JOKERBANK, AceKing. 
But even on acceptable just conditions of winning back bonuses, skilled players don't advise beginners to fall for this bait. 
 In the online casino as well as in traditional gambling houses it is possible to hit the jackpot to win only under condition of a careful game on different tables. 
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