This dataset represents the social network of the technology news web site slashdot.org. The network contains 78,000 users and 510,000 relationships of the types friend and foe. The dataset was extracted from Slashdot between May 2008 and February 2009 and contains only the giant connected component that includes the user CmdrTaco (Rob Malda, moderator and founder of Slashdot). The relationship type friend and foe correspond to positive and negative endorsements.

An analysis of the dataset was presented at WWW 2009:

The Slashdot Zoo:  Mining a Social Network with Negative Edges.  Jérôme Kunegis, Andreas Lommatzsch, and Christian Bauckhage.  In Proceedings of the International Conference on World Wide Web, pp. 741--750, 2009. [pdf]