In 1997 he founded Verein Deutsche Sprache (German Language Association), where he has shown particular commitment as the chairman against the use of Denglish.

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 is in addition a member of the Gesellschaft zur wissenschaftlichen Untersuchung von Parawissenschaften (Society for the Scientific Investigation of Parasciences).

Krämer publishes Unstatistik des Monats together with the psychologist Gerd Gigerenzer and the economist Thomas K. Bauer on the web site of RWI Essen.

[1] The professors, under Ifo Institute for Economic Research chief Hans-Werner Sinn, critiqued the euro rescue politics to the federal government.