Martin Moore is Director of the Centre for the Study of Media, Communication and Power at King's College London, and a Senior Research Fellow at King's. His research focuses on political communication during election and referendum campaigns, and on the civic power of technology platforms. He is the author of The Origins of Modern Spin (Palgrave MacMillan, 2006) and Tech Giants and Civic Power (2016), and publishes frequently on the media and politics.

Damian Tambini is Associate Professor at the London School of Economics. He has served as an advisor and expert in numerous policymaking roles for the European Commission, the Council of Europe, the UK Government, and the UK media regulator, Ofcom. He has published numerous articles and books on the topic of communication, policy, and politics, including Codifying Cyberspace (Routledge, 2008).

Introduction, Martin Moore and Damian TambiniSection 1: Economy1. The Evolution of Digital Dominance: how and why we got to GAFA2. Platform dominance: the shortcomings of antitrust policy3. When data evolves into market power - data concentration and data abuse under competition law4. An Infrastructure Service and Its Challenge to Current Antitrust LawSection 2: Society5. Platform reliance, information intermediaries and news diversity: A look at the evidence6. Challenging diversity - social media platforms and a new conception of media diversity7. The Power of Providence: the role of platforms in leveraging the legibility of users to accentuate inequality8. Digital agenda setting: re-examining the role of platform monopolies9. Free Expression? Dominant information intermediaries as arbiters of internet speech10. The Dependent Press: how Silicon Valley threatens independent journalismSection 3: Politics11. Social media power and election legitimacy12. Manipulating Minds: the power of search engines to influence votes and opinions13. I vote for - how search informs our choice of candidate14. Social Dynamics in the Age of Credulity: the misinformation risk and its fallout15. Platform Power and Responsibility in the Attention EconomyConclusion