Poker rakeback is a rewards system in which loyal and high-volume poker players receive a portion of the rake they contribute to the poker room or network.
Rake, in the context of poker, refers to the fee charged by the online poker site for hosting the games, being able to offer interesting poker promotions and great customer support.
Poker Rakeback is a small percentage of the pot in cash games usually around 5% or a fee attached to tournament buy-ins amounting to 5 to 10%.