This chapter discusses various types of audience participation in the journalistic process, from acting as sources to citizen journalism. It provides an overview of mobile devices and their potential for users and journalists. The chapter outlines social media and their potential value to journalists and journalism organizations. Journalists have been criticized by some as being out of touch and isolated from their audience. The audience can also, in many cases, simply bypass the traditional gatekeepers by deciding for itself what stories it believes are most important. The rise of the Internet has provided increased opportunities for the audience to respond to mainstream journalism and even influence and create it. Generally speaking, journalists seek two different types of sources for their stories: experts and people who have a personal or emotional connection to the story. In literal terms, user-generated content is anything contributed by a user to a journalistic site.