Proceedings of the Dagstuhl Seminar on Social Web Communities. Edited by Harith Alani, Steffen Staab and Gerd Stumme. : Schloss Dagstuhl, 2008.

Krause, Beate, Schmitz, Christoph, Hotho, Andreas and Stumme, Gerd. "The Anti-Social Tagger - Detecting Spam in Social Bookmarking Systems." Paper presented at the meeting of the Proc. of the Fourth International Workshop on Adversarial Information Retrieval on the Web, 2008.