The document discusses several theories related to culture and media in the digital age: The two step flow model explains how opinion leaders influence others, while cultivation theory suggests that repeated media messages can shape thoughts and opinions over time. Postmodernism and uses and gratification theory explore how people can craft online personas and curate their media diets to find communities that match their identities and interests. Reception theory addresses how audiences actively make meaning by agreeing, negotiating, or opposing the messages they encounter.