E-retailing refers to the process of selling products or services online to consumers. It is a subset of e-commerce that involves business-to-consumer transactions. The size of the e-retail market has grown significantly in recent years, with annual online sales in the US reaching over $70 billion in 2004. The e-retailing process typically involves customers browsing products online, adding items to their cart, entering payment information to complete the purchase, and then receiving order and shipment updates. Characteristics of successful e-retailers include entrepreneurship, careful planning, and providing customers with a convenient and enjoyable shopping experience.