Trakt.tv is "the social network for TV/movie watching" — records what each user watched, ratings, watchlists, who they follow. Its core value is the user layer: 5 million users upload what they just watched daily, making Trakt's metadata (especially user ratings and recommendations) very active and accurate. The API lets third-party developers: access user private data (OAuth required) for tracking dashboards, auto-scrobble Plex/Kodi viewing to Trakt, build recommendation algorithms on Trakt data. Differs from IMDb/TMDB — those are neutral metadata databases, Trakt is a social platform. A show's "Trakt score" typically reflects core fan sentiment more than IMDb score.