Automatic shipment of book updates to customers can make life easier for many of those customers and can increase sales for the publisher, but how do we optimize customer convenience and our bottom lines? Should the autoshipment customer list be opt-in or opt-out? What are some strategies for minimizing customer irritation, wasted copies, and return shipping costs? How do we manage "returns" if the product is downloadable or online? What are the legal or policy considerations, such as strict time limits between updates to be able to use those autoshipment customer lists?