Platform Governance Archive

Research

There is a growing research community working on platform policies based PGA data and beyond. We are listing these efforts here.

If you are interested in working with PGA data, please consult the datasets and documentation, and reach out to us with any question you might have. If you are already working with PGA data, please reach out to us (katzenbach@uni-bremen.de) so that we can list you here.

Research by the PGA Team

  • Scharlach, R., Reynolds, C. J., Kuznetsova, V., Hallinan, B., & Katzenbach, C. (2026). Value-driven AI Governance (No. s26va_v1). Center for Open Science.
  • Marchal, N., Hoes, E., Klüser, K. J., Hamborg, F., Alizadeh, M., Kubli, M., & Katzenbach, C. (2025). How negative media coverage impacts platform governance: Evidence from facebook, twitter, and youtube. Political Communication, 42(2), 215–233. https://doi.org/10.1080/10584609.2024.2377992  
  • Otero, P. V. (2024). Platform governance and social justice: Governing hate speech on social media. Emerald Group Publishing.
  • Quintais, J.P., Katzenbach, C., Schwemer, S.F. et al. Copyright Content Moderation in the European Union: State of the Art, Ways Forward and Policy Recommendations. IIC 55, 157–177 (2024). https://doi.org/10.1007/s40319-023-01409-5 
  • Celeste, E., Palladino, N., Redeker, D., Yilma, K. (2023). Platform Policies Versus Human Rights Standards. In: The Content Governance Dilemma. Information Technology and Global Governance. Palgrave Macmillan, Cham. https://doi.org/10.1007/978-3-031-32924-1_5
  • Katzenbach, C., Kopps, A., Magalhães, J. C., Redeker, D., Sühr, T., & Wunderlich, L. (2023). The Platform Governance Archive v1 – A longitudinal dataset to study the governance of communication and interactions by platforms and the historical evolution of platform policies [Data Paper]. Universität Bremen. https://doi.org/10.26092/ELIB/2331
  • Katzenbach, C. (2022). Der „Algorithmic turn“ in der Plattform-Governance. KZfSS Kölner Zeitschrift für Soziologie und Sozialpsychologie, 74, 283–305. https://doi.org/10.1007/s11577-022-00837-4
  • Viejo Otero, P. (2022). Governing hate: Facebook and hate speech (Doctoral dissertation).
  • Katzenbach, C. (2021). “AI will fix this” – The Technical, Discursive, and Political Turn to AI in Governing Communication. Big Data & Society, 8(2), 20539517211046182. https://doi.org/10.1177/20539517211046182 

Research with PGA Data

  • Kominers, S. D., & Shapiro, J. M. (2025). Robust Content Moderation: Theory and Applications. NBER Working Paper 32156 (2024). https://doi.org/10.3386/w32156 
  • Nahrgang, M., Weidmann, N. B., Quint, F., Nagel, S., Theocharis, Y., & Roberts, M. E. (2025). Written for lawyers or users? Mapping the complexity of community guidelines. Proceedings of the International AAAI Conference on Web and Social Media, 19, 1295–1314. https://doi.org/10.1609/icwsm.v19i1.35873 
  • Celeste, E. (2024). LEX DIGITALIS VS ESTADO DE DIREITO: Constitucionalismo digital nas redes sociais. Revista EJEF, (4). https://doi.org/10.70982/rejef.v1i4.46 
  • Dubois, E., & Reepschlager, A. (2024). How harassment and hate speech policies have changed over time: Comparing Facebook, Twitter and Reddit (2005–2020). Policy & Internet, 16(3), 523–542. https://doi.org/10.1002/poi3.387 
  • Aharazi, Bshaer Kameil, “Contextualizing TikTok Controversies: Critical Discourse Analysis of Platform Privacy Debates” (2024). Graduate Thesis and Dissertation post-2024 . 2. https://stars.library.ucf.edu/etd2024/2 
  • De Keulenaar, E., Magalhães, J. C., & Ganesh, B. (2023). Modulating moderation: A history of objectionability in Twitter moderation practices. Journal of Communication, 73(3), 273–287. https://doi.org/10.1093/joc/jqad015 
  • Cannelli, B., & Musso, M. (2022). Social media as part of personal digital archives: Exploring users’ practices and service providers’ policies regarding the preservation of digital memories. Archival Science, 22(2), 259–283. 
    https://doi.org/10.1007/s10502-021-09379-8
  • Guhl, J., Marsh, O., & Tuck, H. (2022). Researching the Evolving Online Ecosystem: Barriers, Methods and Future Challenges. Institute for Strategic Dialogue. Available at: https://www.Isdglobal.org/wp-content/uploads/2022/07/Researching-the-Evolving-Online-Ecosystem_Main-report.pdf 
  • Peukert, A. (2022). Modi der Plattformregulierung in den Bereichen Urheberrecht, Hassrede und Desinformation (EU platform regulation regarding copyright, hate speech and disinformation). SSRN. https://doi.org/10.2139/ssrn.4306988 
  • Paßmann, J., Gerzen, L., Helmond, A., Jansma, R. (2021). Form and digital paratext. History of the Facebook account name. In: Plener, P., Werber, N., Wolf, B. (eds) The Form. AdminiStudies. Forms and Media of Administration, vol 1. J.B. Metzler, Berlin, Heidelberg. https://doi.org/10.1007/978-3-662-64084-5_19