recording & analyzing the conduct and behavior of sight perusal past record and the like of the user, the announcement technique which selects the announcement which it indicates on the basis of this.

In order to decide the announcement which is transmitted from the conduct past record of the fixed period past what kind of search keyword was input, what kind of contents were perused, the audition it did what kind of animated picture music, the possibility the announcement which conforms to the interest of the user such as announcement compared to being chosen is high.

In addition, when announcement is indicated, in contents of the sight which the user has perused and contents of announcement relation also not being because is good, there is an advantage where it can increase the opportunity where announcement is indicated for the enterprise which transmits announcement.