I have a friend who calls himself a "jackpot hunter." He got this nickname because of the way he capitalizes on the different kinds of online poker incentives. He enjoys receiving those entrance bonuses and refer a friend schemes the way a child enjoys choosing toys at a giant children's store. I know that playing poker is only secondary for him; earning cash through the non-play incentives is what makes his day. The refer a friend schemes are among the oldest kind of enticements. An active player (real money) would recruit somebody to register with the room, both of them getting something in return. Also, the online site's patron base goes up. This is clearly a win-win situation. Take note though that the referred player has to first make some hands before the bonus is made available. The specific details differ from one site to another, so it is best to read the terms of the site prior to committing.