Drawing insights from nearly a decade of mixed-method research, Stephen R. Barnard analyzes Twitters role in the transformation of American journalism. As the work of media professionals grows increasingly hybrid, Twitter has become an essential space where information is shared, reporting methods tested, and power contested. In addition to spelling opportunity for citizen media activism, the normalization of digital communication adds new channels of influence for traditional thought leaders, posing notable challenges for the future of journalism and democracy. In his analyses of Twitter practices around newsworthy eventsincluding the Boston Marathon bombing, protests in Ferguson, Missouri, and the election of Donald TrumpBarnard brings together conceptual and theoretical lenses from multiple academic disciplines, bridging sociology, journalism, communication, media studies, science and technology studies, and political science. 

Stephen R. Barnardis Assistant Professor of Sociology at St. Lawrence University, USA. 

1. Introduction.- 2. Twitter: More than 140 Characters.- 3. Understanding the Gates: The Journalistic Field in a Time
of Mediatization.- 4. Tweet or Be Sacked: Hybridity and Shifts in (Professional) Journalistic Practice.- 5. The Pros and Cons of Pro-Am Journalism: A Breaking News During the #BostonMarathon Bombing and Beyond.- 6. Tweeting #Ferguson: Affective Publics, Boundary Maintenance, and Journo- Activism in a Mediatized Field.- 7. We Stand with #Nerdland: Gatewatching and Agenda-Building by the People Formerly Known as the Audience.- 8. The Spectacle of #TrumpsAmerica: Political Journalism, Networked Publics, and the Battle for Symbolic Power.- 9. Twitter and Beyond: Journalistic Practice, Platforms, and the Future of Media Power.