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- Proceedings of the Seventeenth Conference on Hypertext and Hypermedia, page 31--40. (2006)
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- MULTIMEDIA '07: Proceedings of the 15th international conference on Multimedia, page 631--640. New York, NY, USA, ACM, (2007)
- WWW 2006WWW 2006, May 22–26, 2006, Edinburgh, UK, IW3C2, (2006)
- SSM '08: Proceeding of the 2008 ACM workshop on Search in social media, page 11--18. New York, NY, USA, ACM, (2008)
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- CHI '08: Proceeding of the twenty-sixth annual SIGCHI conference on Human factors in computing systems, page 1097--1100. New York, NY, USA, ACM, (2008)
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- CIVR '08: Proceedings of the 2008 international conference on Content-based image and video retrieval, page 417--426. New York, NY, USA, ACM, (2008)
- Online Information Review 32(1):89--101 (2008)
- WWW '08: Proceeding of the 17th international conference on World Wide Web, page 327--336. New York, NY, USA, ACM, (2008)
- KDD '06: Proceedings of the 12th ACM SIGKDD international conference on Knowledge discovery and data mining, page 611--617. New York, NY, USA, ACM, (2006)
- In Proceedings of the 5th ACM/USENIX Internet Measurement Conference IMC'07, (2007)
- KDD '08: Proceeding of the 14th ACM SIGKDD international conference on Knowledge discovery and data mining, page 462--470. New York, NY, USA, ACM, (2008)
- Proceedings of International Conference on Weblogs and Social Media ICWSM, (March 2007)
- WI '07: Proceedings of the IEEE/WIC/ACM International Conference on Web Intelligence, page 184--190. Washington, DC, USA, IEEE Computer Society, (2007)
- Social Web Communities, Dagstuhl, Germany, Schloss Dagstuhl - Leibniz-Zentrum fuer Informatik, Germany, (2008)
- WWW '09: Proceedings of the 18th international conference on World wide web, page 771--780. New York, NY, USA, ACM, (2009)


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