An information apparatus includes a comment processing unit that acquires, from an external posting site, a comment of a viewer by using a tag as a search key. The comment represents a viewer's feedback on the content of a program being viewed and is related to a tag for grouping with other comments. The information apparatus also includes a display processing unit that generates data to be displayed on a screen. The data includes an image of a program being broadcast by a first broadcasting station and at least one comment for a program being broadcast by a second broadcasting station, which is different from the first broadcasting station.