| 摘要 |
To enable commercial product information to be properly managed and information on a person inputting the commercial product information to be used together with the commercial product information. A computer executes receiving commercial product information inputted by an operation of an operator and operator information specifying the operator, storing a storage unit with identifying information in the way of being associated with the commercial product information and the operator information, and, when receiving the identifying information on the occasion of a query from a user and when transmitting the associated commercial product information and receiving a signal purporting a purchase of the commercial product associated with the identifying information from the user, getting purchase information of the commercial product stored in the way of being associated with the operator information.
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