Do these businesses not have any employees? Every buisness that begins accepting has employees getting introduced to bitcoin for the first time. I agree it would be awsome if every buisness that accepted them would at least retain the 2-3% they would pay in fees in bitcoin and I think we as consumers have a right to only spend our coins with those retailers who openly state they retain a portion. But back to my origional point the world is a big place.
They don't necessary have to retain bitcoins. Even if they spread it around, like Overstock is doing with employee bonuses in bitcoin, is a wonderful initiative.
Oh cool, I hadn't heard of that. Could increase usage exponentially when a new business accepts bitcoin if they give some to employees.