A recommended word for each category is configured to be extracted from review information in a review database to manage the recommended word. The review database is configured to manage the review information on merchandise or a service in units of categories of the merchandise or the service. A control is configured to be executed such that a review post page on the specified merchandise or service is presented. A determination whether present time is assistance timing or not is configured to be executed based on an aspect of character input to the review post page. In response to an acquisition of a determination result that the present time is the assistance timing, a control is configured to be executed such that the recommended word corresponding to the category to which the specified merchandise or service belongs is presented.