| 摘要 |
Contribution information is permitted to post such that a viewer can recognize a reliability of the contribution information. A server device to which a terminal device is connectable via a network includes a contribution information acquisition means that acquires contribution information from the terminal device, a terminal information acquisition means that acquires terminal position information indicating a position of the terminal device, an extraction means that extracts specific information capable of specifying a subject of contribution from the acquired contribution information, a contribution subject information acquisition means that acquires contribution subject position information indicating a position of the subject of contribution specified by the extracted specific information, a comparison means that compares the acquired contribution subject position information with the acquired terminal position information, and a determination means that determines a situation of output of the contribution information on posting based on a comparison result by the comparison means.
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