Editor of my personal Weblog HD's Two Cents

Co-Editor of @fhs_esociety, @bledconferece, @Journal_EM, facebook.com/ElectronicMarkets, facebook.com/bledconference

Associate Editor of Electronic Markets - The International Journal on Networked Business (since July 2008) 

Co-Editor of Electronic Markets - The International Journal (until June 2008) 

Electronic Commerce Research and Applications (ECRA): Special Issue 'Social Commerce', 2011/2012, Guest Editor, together with Lina Zhou and Ping Zhang

Strader, Troy (ed.): "Digital Product Management, Technology and Practice: Interdisciplinary Perspectives", 2011: Member of the Editorial Advisory Board

Co-Editor of Churer Schriften zur Informationswissenschaft (2008-2009)

Electronic Markets, Vol. 15 (2005), No. 1: 'Pervasive Computing / Ambient Intelligence': Guest Editor, together with Prof. Bharat Rao

JMM - The International Journal on Media Management, Vol. 4, Issue 3 (Autum 2002) : Guest Editor, together with Herbert Burkert

Electronic Markets, Vol. 11 (2001), No. 1: Guest Editor together with Rainer Alt