"Was machen die anderen? Onlinenutzung von Kindern im europäischen Vergleich" [What Are the Others Doing? Online Usage by Children. A European Comparison], lecture by C. Lampert and U. Hasebrink at the conference "Mit der Welt vernetzt. Kinder und Jugendliche in virtuellen Erfahrungsräumen" [Linked-up with the World. Children and Adolescents in Virtual Realms of Experience] in Berlin on 9 and 10 October 2008.