| 摘要 |
An item information system for providing item-related information includes an item mapping of item codes to item information related to the items and a user mapping of user identifiers to user information. Item codes are received via a communication link along with user identifiers of the users who submitted the item codes. The item codes are provided to the users via advertisements for the items. For each received item code, the corresponding item information is retrieved from the item mapping. An item message is sent from the item information system that includes a link to item information as indicated by the item mapping. The item information system enables a user to obtain an item code from an advertisement, submit the item code to the item information system, and receive the item information related to the item of the advertisement.
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