 Since 1996 "Lexikon der populären Irrtümer" (Dictionary of Popular Mistakes) has been published, triggering a wave of publications of similar mistake dictionaries.Krämer is a member of Gesellschaft der Freunde der Hebräischen Universität Jerusalem (Society of Friends of Hebrew University of Jerusalem), the Ruhr Graduate School in Economics, and the Schweizer Orthographische Konferenz (Swiss Orthographical Conference).He has been editor of the German Economic Review since 1 January 2008.