This document provides information about audiences for media products. It defines what an audience is and explains why audiences are important for the media industry. It discusses how new technologies have impacted audiences and the concept of "fragmented audiences". It also covers how institutions continue generating revenue. The document then defines different types of audiences like niche and mass. It explains why categorizing audiences is useful for targeting demographics and psychographics. Finally, it discusses common methods for measuring audiences like ratings, subscriptions and box office numbers.