Abstract: Disclosed is an electronic book system capable of providing a community for pages thereof and capable of imparting a sense of integration to a plurality of users. The disclosed electronic book system is fundamentally based on the finding that by allowing content included in a page of a book to be specified and by allowing a comment related to the content to be input, a community can be provided for pages of an electronic book and a sense of integration can be imparted to a plurality of users. The disclosed electronic book system includes a terminal capable of displaying the electronic book and an electronic book server connected via a communication line to the terminal.