An apparatus for a television includes an on-screen display (OSD) generator, a first interface to receive signals for controlling a television, a first storage area to store information relating to a plurality of channels, a second interface to receive data from a social network service (SNS), and a second storage area to store the SNS data. A controller of the apparatus controls the OSD generator to simultaneously output for display program information of the plurality of channels. The program information is output based on the stored SNS data, and the stored SNS data is based on a plurality of members of the social network service.