I don't use either, but thanks for the information. It is clear that if they are doing this it is because they can offset that 1% loss with revenue elsewhere, they must have it very well calculated. In any case, it is very beneficial for the player because you are basically getting paid for betting. Leaving aside the short term variance, if you bet regularly with 1% in your favor you are going to make money in the long term, and it isn't just 1%, because it is an interest that is compounded in your favor.