"Alles anders durch Google und Facebook? Praktiken, Prinzipien und Paradoxien der informationsorientierten Mediennutzung online [Everything Different because of Google and Facebook? Practices, Principles and Paradoxes of Information-Oriented Media Use Online]", keynote presentation by L. Merten at the conference "Informationskompetenz und Demokratie [Information Literacy and Democracy]" on 18 October 2019 at the University of Hildesheim.