Patent ID: 7353186

Claim:
An advertising system, which provides advertisements on a display of a computer through a network communications system, comprising: storing means comprising a multi-level storage hierarchy for storing advertisements, in which the levels of said multi-level storage hierarchy gradually fractionalize advertisement areas into increasingly more specific geographic regions; means for categorizing the advertisements so as to belong to respective levels of geographic fractionalization within said multi-level storage hierarchy, categorizing the advertisements according to area sections within said respective levels, and categorizing the advertisements according to the content thereof; data receiving means for receiving from said computer perusal data indicating the levels of geographic fractionalization, the area sections within the levels, and the content of the advertisements; retrieving means for retrieving, from information stored in the storing means, advertisements categorized according to the levels of geographic fractionalization, the area sections and the content of the advertisements, all of which are concerned with the perusal data received by the data receiving means; and data transmitting means for transmitting to the computer advertisement data on the advertisements retrieved by the retrieving means.