A communication apparatus includes a display device, a camera, a database, and a server. Display information is displayed on the display device. A viewer image of a first viewer, who is watching and listening to the display information, is taken with the camera. The display information is associated with the viewer image that has been taken with the camera. The display information and the viewer image are stored in the database that is connected over a network. The server reproduces the viewer image in association with the display information. A second viewer who has watched and listened to the viewer image of the first viewer is able to know the reaction of the first viewer, and thus new communication resulted from the reaction of the first viewer can be expected.