| 摘要 |
Each of sites 1 a to 1 c makes public the web page on which an advertisement image handled by a merchandise sales site (server 3 ) is posted. When each user has an incentive to purchase the merchandise by the advertisement image while referring to the web page from the user terminals 2 a to 2 c, he or she moves to the merchandise sales site by clicking the advertisement image, etc. The access source extracting and storing unit 11 of the server 3 extracts and stores link source information each time there is an access moved from the sites 1 a to 1 c by clicking the advertisement image. Then, for each predetermined period of time, the counting unit 12 counts a number of accesses gained by the advertisement image for each advertisement image and the counted result display unit 13 displays the counted results.
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