Patent ID: 8224718

Claim:
A method for managing inventory information, comprising: obtaining, from a peer-to-peer marketplace network, at least one item from a group consisting of traded items and items obtained for free; obtaining descriptive metadata about the at least one item; automatically updating, with the descriptive metadata about the at least one item, via a programmatic link of the peer-to-peer marketplace network, inventory information of inventory items owned by a household; receiving a command, in response to updating the inventory information and in a graphical user interface of a mobile device from a user of the mobile device, to display the inventory information to determine whether to purchase a particular item; displaying the inventory information in the graphical user interface of the mobile device responsive to receiving the command; in response to receiving the command and displaying the inventory information resulting in a determination to purchase the particular item, obtaining a point-of-sale transaction notification via a wireless interface of the mobile device from a point-of-sale register, wherein the point-of-sale transaction notification relates to a transaction already completed by the point-of-sale register with respect to purchasing the particular item by the user of the mobile device, wherein the point-of-sale transaction notification comprises descriptive metadata about the particular item; adding the particular item as part of the inventory information, using the mobile device, wherein adding the particular item comprises adding the descriptive metadata about the particular item to the inventory information based on the point-of-sale transaction notification; and removing a portion of the inventory information for inventory items that are no longer owned by the household.