To solve the problem that a process for allowing the persons concerned to form the mutual link of each home page on the Internet is inefficient.

A person who wants mutual link with the other third person registers a home page set or recommended by the person himself or herself in this system. This registration is realized on a condition an instruction for allowing this system to present link information with the other already registered home pages through his or her own home page to readers is written in the source code of the home page. Thus, the readers of the home page can receive the presentation of the destination of link of the other party through each homage page so that the relation of comings and going among the mutual home pages, that is, the mutual link can be formed. Therefore, the person who wants the mutual link registers his or her own home page in this system, and writes the instruction for allowing this system to present the link information through the home page to the readers in the source code of the home page in order to form the mutual link.