| 摘要 |
<p>An advertisement information offering method, an advertisement information offering system and an advertisement information offering program are provided to make advertisement reflecting not only users' evident tastes but also their potential ones available to users for communication terminal devices, so that their tastes can be made apparent with the high degree of accuracy. This advertisement information offering method is comprised of a step for acquiring user ID information (8), a step for extracting retrieval history information (14) corresponding to friends B, C and D of user A's on the basis of a registered database (4e) constructed by mutually associating the user ID information (8) with his or her friend ID information (10), a step for extracting first advertisement information from an advertisement database (4f) on the basis of the extracted retrieval history information (14), and a step for offering the extracted first advertisement information to a user computer (2).</p> |
