An index calculation unit of a server calculates a Pre-Ad rank value that is a first index, on the basis of a GMS value and a unique users value. A list generation unit generates a list of display-candidate advertisements selected on the basis of the first indexes, the list including location information of the advertisements, and sends the list to a user terminal. A match level determination unit of the user terminal 3 calculates a correlation between a user and the product in relation to the user. An individual index calculation unit calculates an Ad rank value that is a second index, on the basis of the first index and the correlation. An advertisement choosing unit specifies a number of advertisements to be displayed and, on the basis of the second indexes, chooses the specified number of advertisements from among the advertisements of the one or more products.