invited talks


The challenges of preserving and sharing social media research data. Presentation at Locked out of Social Platforms: An iCS Symposium on Challenges to Studying Disinformation, Copenhagen, DK,
27.10.2018. (Invited keynote).

The Pleasures and Perils of Studying Twitter. Presentation at Researching Social Media Conference. Sheffield, UK, 04.11.2013.
(Invited keynote).

Tweeting the News. Presentation at Social Media in the News (SocMedNews), Workshop at International Conference on Weblogs and Social Media (ICWSM 2012), Dublin, 04.06.2012. View slides (invited keynote).


The Challenges of Preserving and Sharing Social Media Research Data. ASIST Webinar Series, 21.03.2019.

The challenges of preserving social media (research) data. Invited talk at Workshop on “Curating digital data in museums”, Graz, Austria, 11.02.2019.

Are Social Media the historical sources of the future? At: What can be known from the web? – Source criticism beyond bots, agents and trolls in social and cultural web research (Workshop at Web Science Conference 2018, WebSci18), 27.05.2018.

Between platform lockdowns and sampling biases: Challenges in using social media data for (computational) social science research. Expertenworkshop des ABIDA Projektes zum Thema Datenintensive Wissenschaften: Theorie & Praxis, 16.11.2018.

Saving the News Media. At: Saving the Web – The Ethics and Challenges of Preserving What’s on the Internet, Library of Congress, Washington, DC, USA, 16.06.2016.

Big Data – Chancen und Risiken einer kontroversen Technologie. Experten-Workshop im Rahmen des Projektes abida (Assessing Big Data), Karlsruhe, Germany, 08.03.2016.

The Pleasures and Perils of Studying Social Media. Open Data Cambridge Workshop on “Strategies for managing social media research data”, Cambridge, UK, 12.02.2016.

Chances and Challenges of Studying Social Media Data. Presentation at University of Maryland, Maryland Institute for Technology in the Humanities, 30.04.2015.

Social Media as Research Data. At Preserving Social Media, London, UK, 27.10.2015.

The digital traces of user generated content: How social media data may become the historical sources of the future. Talk at lecture series of the John W. Kluge Center, Library of Congress, Washington DC, USA, 14.05.2015. 

Twitter and Society. Presentation at workshop “Digitale Durchdringung”, organized by FoKoS, Universität Siegen. 17.11.2014.

Publishing with Impact. Presentation at 3rd PhD Forum of the Leibniz Association’s Section B, Halle (Saale), Germany. 04.07.2014.

Alternative metrics to measure scholarly performance and their use across disciplines. Can big (and Sometimes messy) data facilitate collaboration? At: Methods, Models, Tools, Best Practices, and Next Steps in Exploring Multi-Institutional Interdisciplinary Collaboration Online and Onsite; Workshop Sponsored by HASTAC, the NSF EAGER Grant team, and the Duke University PhD Lab on Digital Knowledge. 28.05.2014.

What’s new in social media research? A quick guide through recent publications (2012-2013) for social scientists. Workshop at General Online Research GOR14, Cologne. Slides. 05.03.2014.

Twitter und die Landtagswahl in Nordrhein-Westfalen 2012. Presentation at Workshop “Social Media und politische Öffentlichkeit”. With Chris J. Demmer. München, Germany. 03.05.2013.

Open Online Communities. From Knowledge to Metrics. Invited presentation at Open Online Communities workshop, Brest, France. 06.02.2013.

Approaches to Analyzing Scientific Communication on Twitter. Präsentation at Workshop “The World According to Twitter”. With Cornelius Puschmann. Brisbane, Australia, 28.06.2011.


Podiumsdiskussion “Forschungsdatenmanagement und die Herausforderungen des Datenschutzes.” Vortragsreihe Digitale Lebenswelten, Universität Hildesheim, 15.01.2019.

Panel Discussion on Digital Politics and the Practice of History. Contemporary Political History in the Digital Age, Workshop at Foreign & Commonwealth Office, London, UK, 11.02.2016.

Participant in the roundtable session “Twitter and Society and beyond” at Internet Research 14.0, Denver, Colorado, USA, 23-26 October 2013.


Angewandte sozialwissenschaftliche Forschung. Eingeladener Diskussionsbeitrag im Masterseminar “Berufsfelder der politischen Kommunikation” an der Heinrich-Heine-Universität Düsseldorf, 11.01.2017.

Angewandte sozialwissenschaftliche Forschung. Eingeladener Diskussionsbeitrag im Masterseminar “Berufsfelder der politischen
Kommunikation” an der Heinrich-Heine-Universität Düsseldorf, 06.01.2016.

Social Media Daten als Grundlage sozialwissenschaftlicher Forschung. Chancen und Herausforderungen. Eingeladener Vortrag in der interdisziplinären Ringvorlesung des Kompetenzzentrums für empirische Forschungsmethoden der Universität Kassel. Kassel, 11.06. 2014.

Social media research methods: new approaches and open challenges. Vortrag im Aufbauseminar „Uses and effects of social media“ für Medienwissenschaftler der Heinrich-Heine-Universität Düsseldorf, 26.11. 2013

Twitter Research: State of the Art and Open Challenges. Conference Midi à l’EBSI, Université de Montréal, Canada. 17.10.2013

Gastvortrag im Seminar „Web Science“ an der Hochschule für Angewandte Wissenschaften Hamburg, gemeinsam mit Isabella Peters. Hamburg, Juni 2012

Conference Tweets: Approaches for Analyzing Scientific Communication on Twitter. Gastvortrag an der Universität Koblenz-Landau, Koblenz, Mai 2011.

Three guest lectures in different classes at Karl-Franzens-Universität Graz (Austria) as part of an Erasmus exchange programme. Graz, Mai 2011.

Wissensrepräsentation im Social Semantic Web. Gastvortrag an der Hochschule für Angewandte Wissenschaften Hamburg, Mai 2010.