Bonuses are offered by gambling operators for two reasons. To encourage new customers to register with them, and to keep their existing customers interested. Some betting operators even offer bonuses to customers depending on which kind of payment method they choose to use when depositing and withdrawing funds to and from their accounts. Our PayPal betting sites review takes a look at which betting operators offer their customers bonuses and rewards for using PayPal as a payment method, and which ones don’t.