Masters thesis on social software (e.g., blogs, wikis, social bookmarking services)...and how they support learning, knowledge management, and communities of practice.
M. Krötzsch, D. Vrande�?ić, and M. Völkel. The Semantic Web - ISWC 2006, volume 4273 of Lecture Notes in Computer Science, page 935--942. Heidelberg, DE, Springer, (2006)
A. Ebersbach, M. Glaser, and R. Heigl. UTB UVK Verlagsgesellschaft, Konstanz, 2. überarb. edition, (2010)noch nicht erschienen, laut Verlag für Sept 2010 geplant.