The document discusses several theories related to audiences and media consumption, including: 1) The hypodermic needle theory which suggests that consumers wholly accept the information that is given to them in media, as exemplified by Orson Welles' 1938 radio broadcast causing mass panic. 2) Uses and gratifications theory which posits that people seek out specific media to fulfill personal needs related to information, identity, social interaction, and entertainment. 3) Consumer generated content which media producers benefit from as it is uploaded to their infrastructure at no cost to them, while audiences generate content to share things they find interesting or funny.