18. A configured computer system comprising: one or more processors; a categorizer component that is configured to, when executed by at least one of the one or more processors, determine one or more first categories for a user-defined group of multiple items, the user-defined group being defined by a user that is one of multiple customers of an item ordering service that makes the multiple items available to the multiple customers, at least one of the multiple items being associated with one or more second categories that are not included in the one or more determined first categories; a viewer component that is configured to, when executed by at least one of the one or more processors, provide information for display to the user identifying the user-defined group of multiple items as a single item to be ordered, wherein the information, when displayed, indicates 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; and an item ordering component that is configured to, when executed by at least one of the one or more processors, and after performance by the user of the indicated action, initiate an order for the user-defined group of multiple items for the user.
18. A configured computer system comprising: one or more processors; a categorizer component that is configured to, when executed by at least one of the one or more processors, determine one or more first categories for a user-defined group of multiple items, the user-defined group being defined by a user that is one of multiple customers of an item ordering service that makes the multiple items available to the multiple customers, at least one of the multiple items being associated with one or more second categories that are not included in the one or more determined first categories; a viewer component that is configured to, when executed by at least one of the one or more processors, provide information for display to the user identifying the user-defined group of multiple items as a single item to be ordered, wherein the information, when displayed, indicates 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; and an item ordering component that is configured to, when executed by at least one of the one or more processors, and after performance by the user of the indicated action, initiate an order for the user-defined group of multiple items for the user. 25. The computer system of claim 18 further comprising oneor more components configured to, before the providing of the information, define the group of multiple items based on received indications from the user.