Systems and methods of generating a list of preferred items are disclosed herein. A uniform resource identifier that references a listing web service is provided. A call to the listing web service is received from a linking website. The call to the listing web service includes an item identifier corresponding to an item that the consumer is willing to purchase. The call can be executed as a result of the consumer selecting a listing icon that references the uniform resource identifier. The listing icon is displayed on the linking website hosted at a linking domain. The listing web service can be executed to add the item to the list of preferred items associated with the consumer. The list of preferred items is displayed on a listing website. The listing website can be hosted at a listing domain which is different from the linking domain.