The Cash Back offer is a get bonus that is considered by some savvy players as an insurance bonus. This can be claimed by some casinos weekly and all balances must be zero in order to be claimed. The bonus works so that any losses made can be redeemed at a percentage. Often 10%, you can get this money back based on what you deposited. Now, you can get other percentages, but 10% is the most common. You will find that this type of bonus throughout many promotional pages within the Top 10 list.