Siegfried Handschuh is a SFI Stokes Lecturer at the National University of Ireland, Galway (NUIG) and research leader of the Semantic Collaboration team at the Digital Enterprise Research Institute (DERI). Siegfried holds Honours Degrees in both Computer Science and Information Science and a PhD from the University of Karlsruhe. He published over 90 papers as books and journal, book chapters, conference, and workshop contributions, mainly in the areas of Annotation for the Semantic Web, Knowledge Acquisition and Social Semantic Collaboration.