Books:

Media concentration 2.0:

Regulating platform opinion power in a concentrated digital media ecosystem

Doctoral Dissertation · Theresa Josephine Seipp

University of Amsterdam · published in 2024

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Articles, Reports & Opinion Pieces:

2026

Cultures of Collaboration within Journalism in an AI-Driven Media Ecosystem
Seipp, T.J., Helberger, N., Sjøvaag, H. · Manuscript submitted to journal
EU Audience Measurement Regulation: Implications for the Media’s Democratic Role
Van Drunen, M., Dodds, T., Cools, H., Seipp, T.J. · Digital Journalism
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Expert Report on GenAI and Democracy: Risks and Opportunities
Helberger, N., De Vreese, C., Nauds, L., Van Drunen, M., Seipp, T.J. · Council of Europe
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2025

AI and Journalism: From Threats to the Public’s Trust to New Opportunities in the Newsroom
Seipp, T.J. · Chapter in IRIS Report on the News Media Sector · European Audiovisual Observatory
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2024

The Press as Platform
Meese, J., Seipp, T.J. · Digital Journalism
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Between the Cracks: Blind Spots in Regulating Media Concentration and Platform Dependence in the EU
Seipp, T.J., Helberger, N., De Vreese, C., Ausloos, J. · Internet Policy Review
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2023

Defining the ‘Media’ in Europe: Pitfalls of the Proposed European Media Freedom Act
Seipp, T.J., Fathaigh, R., Van Drunen, M. · Journal of Media Law
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Media Concentration Law: Gaps and Promises in the Digital Age
Seipp, T.J. · Media & Communication
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Popularity-Driven Metrics: Audience Analytics and Shifting Opinion Power to Digital Platforms
Dodds, T., Helberger, N., De Vreese, C., Resendez, V., Seipp, T.J. · Journalism Studies
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Dealing with Opinion Power in the Platform World: Why We Really Have to Rethink Media Concentration Law
Seipp, T.J., Helberger, N., De Vreese, C., Ausloos, J. · Digital Journalism
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2022

Media Freedom — Book Review of Damian Tambini’s work
Seipp, T.J. · Journalism & Mass Communication Quarterly
European Media Law in Times of Digitality
Dreyer, S., Kettemann, M.C., Schulz, W., Seipp, T.J. · In The Law of Global Digitality, Routledge
Study on Media Plurality and Diversity Online
Brogi, E., Fahy, R., Idiz, D., Irion, K., Meiring, A., Parcu, P.L., Poort, J., Seipp, T.J., Verza, S., et al. · Report commissioned by the European Commission, Directorate-General for Communications Networks, Content and Technology

2021

News Media’s Dependency on Big Tech: Should We Be Worried?
Seipp, T.J. · Internet Policy Review
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What Would Happen if Facebook or Google Decided to Leave the Netherlands Tomorrow?
Resendez, V., Seipp, T.J., Dodds, T., Helberger, N., De Vreese, C., et al. · Mozilla Festival
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What Would Happen if Facebook and Google Left Your Country Tomorrow?
Resendez, V., Seipp, T.J., Dodds, T., Helberger, N., De Vreese, C., et al. · LSE Media Blog
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Strategic Lawsuits Against Public Participation (SLAPPs) Threaten Human Rights and Democracy. The EU Must Act!
Hueting, L., Milewska, P., Seipp, T.J. · Rule of Law in Poland
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Normative Leitbilder der Europäischen Medienordnung
Heldt, A., Dreyer, S., Schulz, W., Seipp, T.J. · Verlag Hans-Bredow-Institut
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2020

The European Communication (Dis)Order: Mapping the Media-Relevant European Legislative Acts and Identification of Dependencies, Interface Areas and Conflicts
Heldt, A., Dreyer, S., Schulz, W., Seipp, T.J. · Verlag Hans-Bredow-Institut
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