There are various ways of implementing Privacy-enhancing technologies (PETs) in Social Network Sites. How should these be designed? Who should carry the burden of implementation? Do cultural differences play a role here? Various experts tackle these issues in a round-table discussion. The debate is led by professor Milton Mueller and Ralph Bendrath, Aad Koppenhol and Scott Cunningham participate. Part of the conference on Privacy in Social Network Sites at Delft University of Technology, October 23 and 24, 2008. www.privacyinsocialnetworksites.nl