To provide a system which allows users to affiliate with each other by face-to-face direct introduction of advertisement data.

A server 10 transmits advertisement data to a mobile terminal 20a of a user (introducer). The user (introducer) faces interviews another user (browsing person) and transmits advertisement data from the mobile terminal 20a to a mobile terminal 20b of another user (browsing person). On transmission of the advertisement data, the mobile terminal 20a transmits a history of transmission of the advertisement data to the server 10. On reception of the advertisement information, the mobile terminal 20a transmits a history of reception of the advertisement data to the server 10. The server 10 collates advertisement data in the history of transmission of advertisement data with advertisement data which the server 10 has transmitted to the mobile terminal 20a. In the case that they coincide as a collation result, the server 10 determines reward payment to the user (introducer) on the basis of transmission and reception histories of advertisement data.

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