Special events
- Member of the Organization Committee of the NEPOMUK - Social Semantic Desktop - Summer School, Sliema, Malta, 7 - 13 September 2008
- Co-Organizer of the NEPOMUK Nexus event at ESWC 2008
- Co-Organizer of the Enabling networked knowledge event at ESWC 2008
Organization Committees
- PSD 2010 - 1st Workshop on Personal Semantic Data on the Desktop and on the Web co-located with EKAW 2010 - Knowledge Engineering and Knowledge Management by the Masses (EKAW 2010)
- CISWSN 2010 - 3rd Workshop on Collective Intelligence in Semantic Web and Social Networks co-located with IEEE/WIC/ACM Joint International Conference on Web Intelligence and Intelligent Agent Technology 2010 (WI 2010)
- CISWSN 2008 - 2nd Workshop on Collective Intelligence in Semantic Web and Social Networks co-located with IEEE/WIC/ACM Joint International Conference on Web Intelligence and Intelligent Agent Technology 2008 (WI 2008)
- SAAKM 2007 - Semantic Authoring, Annotation and Knowledge Markup Workshop at the 4th International Conference on Knowledge Capture (KCap 2007)
- SemSoc 2007 - Special Track on Artificial Intelligence and Social Semantic Collaboration at the 20th International FLAIRS Conference (FLAIRS 2007)
Program Committees
- 1st Workshop on Research 2.0 and Software Engineering at TOOLS 2010 Federated Conferences, June 2010, Malaga, Spain
- S3T: 2nd International Conference on Software, Services and Semantic Technologies, September 2010, Varna, Bulgaria
- ESWC 2010 Semantic Web in Use Track, May 2010, Heraklion, Greece
- ISWSA 2010 - 2010 International Conference on Intelligent Semantic Web - Services and Applications, June 2010, Amman, Jordan
- SemWiki 2010 at ESWC 2010, May 2010, Heraklion, Greece
- EKAW 2010 Poster and Demo Track, October 2010, Lisbon, Portugal
- The Semantic Web and Applications Track at the 25th Annual ACM Symposium on Applied Computing, March 2010, Sierre, Switzerland
- ISWC 2009 Poster and Demo Track, ISWC 2009, October 2009, Washington, USA
- SAAKM 2009 - Semantic Authoring, Annotation and Knowledge Markup Workshop @ the 5th International Conference on Knowledge Capturing, September 2009, Los Angeles, USA
- Dynamics of Real-World Social Networks - Special Session at ICCCI 2009, 5-7 October 2009, Wroclaw, Poland
- Enterprise X.0 - 1th International Enterprise X.0 Workshop: From Web 2.0 in Enterprises towards a Corporate Web X.0, co-located with BIS 2009, 27 - 29 April 2009, Poznan, Poland
- SemWiki 2009 - 4th Workshop on Semantic Wikis, co-located with ESWC 2009, 31 May - 4 June 2009, Heraklion, Grecee
- SWAP 2008 - 5th Workshop on Semantic Web Applications and Perspectives, 15 - 17 December 2008, Roma, Italy
- I-Semantics 2008 - International Conference on Semantic Systems 2008, 3 - 5 September 2008, Graz, Austria
- SemWiki 2008 - The 3rd Semantic Wiki Workshop at the 5th European Semantic Web Conference (ESWC 2008), 1 - 5 June, Tenerife, Spain
- SemDeskDesign 2007 - 1st Workshop on Architecture, Design, and Implementation of the Semantic Desktop at the 4th European Semantic Web Conference (ESWC 2007), 3 - 7 June, Innsbruck, Austria
Journal Reviews
- Occasional reviewer for Elsevier Information Systems Journal
- Occasional reviewer for ComSIS - Computer Science and Information Systems Journal
Reviews
- The 5th International Conference on Knowledge Capture (KCap 2009), Redondo Beach, California, US, September 2009
- The 6th European Semantic Web Conference (ESWC 2009), Heraklion, Greece, June 2009
- The 17th World Wide Web Conference (WWW 2008), Beijing, China, April 2008
(complete list of reviews ...)




