1. A non-transitory computer-readable storage medium having stored contents including instructions that, when executed, configure a computer system to perform a method, the method comprising: determining, by the configured computer system, one or more categories associated with a user-defined group of multiple items that is defined by a first user to be treated as a group, the first user being one of multiple customers of an item ordering service that makes the multiple items available to the multiple customers; providing, by the configured computer system, information for display to a second user that identifies the user-defined group of multiple items based on at least one of the associated categories for the user-defined group, wherein the second user is one of the multiple customers and is distinct from the first user, and wherein the provided information, when displayed, identifies the user-defined group of multiple items as a single item to be ordered and includes a visual indication of an action that is to be performed to order the user-defined group of multiple items from the item ordering service as the single item; in response to the indicated action being performed by the second user, initiating an order of the user-defined group of multiple items for the second user; and based at least in part on the defining of the user-defined group of multiple items by the first user, compensating the first user.
1. A non-transitory computer-readable storage medium having stored contents including instructions that, when executed, configure a computer system to perform a method, the method comprising: determining, by the configured computer system, one or more categories associated with a user-defined group of multiple items that is defined by a first user to be treated as a group, the first user being one of multiple customers of an item ordering service that makes the multiple items available to the multiple customers; providing, by the configured computer system, information for display to a second user that identifies the user-defined group of multiple items based on at least one of the associated categories for the user-defined group, wherein the second user is one of the multiple customers and is distinct from the first user, and wherein the provided information, when displayed, identifies the user-defined group of multiple items as a single item to be ordered and includes a visual indication of an action that is to be performed to order the user-defined group of multiple items from the item ordering service as the single item; in response to the indicated action being performed by the second user, initiating an order of the user-defined group of multiple items for the second user; and based at least in part on the defining of the user-defined group of multiple items by the first user, compensating the first user. 10. The non-transitory computer-readable storage medium of claim 1 wherein the providing of the information based on the at least one associated category for the user-defined group includes providing categorization information related to the user-defined group for display that includes an indication of the at least one category.