1. A method comprising: concurrently maintaining, by a theme-based media program discovery system configured to provide a theme-based media program discovery service, data representative of a first active media program curation heuristic that specifies a first set of curation parameters associated with a media program theme, and a second active media program curation heuristic that specifies a second set of curation parameters associated with the media program theme; curating, by the theme-based media program discovery system based on the first active media program curation heuristic, a first set of one or more media programs related to the media program theme; and curating, by the theme-based media program discovery system based on the second active media program curation heuristic, a second set of one or more media programs related to the media program theme.