Social search Reference solving, and design of interactive information systems. 1. CL Giles et al, "Cite Seer: An Automatic Citation Index- Carroll has a PhD in experimental psychology from Colum- ing System, Proc. Conf. Digital Libraries, ACM Press, 1998, ia University. He is a fellow of the acM, the IEee, and the pp.89-98 Human Factors and Ergonomics Society. Contact him at 2. C. Cattuto, "Semiotic Dynamics in Online Social Communi- carroll@ist. psu. edu. ties, European Physical J. C, vol. 46. 2006. pp 33-37. 3. S. Sen et al., "Tagging Communities, Vocabulary, Evolu- C. Lee Giles is the David Reese Professor of information sci ion, Proc Conf. Computer Supported Cooperative Work, nces and technology at Pennsylvania State University. I ACM Press,2006,pp.181-190 research interests are in intelligent Web tools, search 4. S.A. Golder and B.A. Huberman, "Usage Pattens of Col- engines and information retrieval, digital libraries, Web aborative Tagging Systems, J. Information Science, vol services, knowledge and information extraction, and data 2,no.2,2006,pp.198-208 ining. Giles has a PhD in optical from the uni. 5. C Marlow et al., "HT06, Tagging Paper, Taxonomy, Flickr, versity of Arizona. He was a co-creator of the popular Academic Article, to Read, Proc. Conf. Hypertert and search tools, Cite Seer, for computer science, and Hypermedia, ACM Press, 2006, pp 31-40 ChemXSeer, for chemistry. He is a fellow of the ACm, the 6. D.R. Millen et al., "Dogear: Social Bookmarking in the EEE, and the International Neural Network Society. Con Enterprise, Proc. Conf. Computer Human Interaction, ACM tact him at giles@ist. psu.edu 111-120 7. L Page et al, The PageRank Citation Ranking: Bring Order to the Web, tech report, Computer Science Dept, Stanford 8. S. Brin and L Page, " The Anatomy of a Large-Scale Hyper- textual Web Search Engine, Proc. Conf. World Wide Web Elsevier Science Publications, 1998, pp. 107-117 U. Farooq et al., "Supporting Distributed Scientific Collab- oration: Implications for Designing the Cite Seer Collabo- ratory, "Proc. Hawaii Int'I Conf System Sciences, IEEE CS Press, 2007, P. 26c. Umer Farooq is a final year PhD student in information sci- nces and technology at Pennsylvania State University. His dissertation research focuses on supporting creativity in computer-supported collaborative systems. Farooq has a BS in computer science from the National University of Computer and Emerging Sciences, Pakistan, and an MS in computer science from Virginia Tech. He is a student mem- ber of the ACM. Contact him at ufarooq @ist. psu.edu. Yang Song is a and engineering at Pennsylvania State University. His research interests include developing and applying statis- tical machine learning methods for text classification and clustering, pattern recognition, Web information retrieval, and data mining. Song has a BE in computer science from Zhejiang University, China. He is a student member of the IEEE Contact him at yasong@cse psu.edu. John M. Carroll is the Edward M. Frymoyer Chair Professor of formation sciences and technology at Pennsylvania State University. His research interests include methods and the- ory in human-computer interaction, particularly as applied to networking tools for collaborative leaming and problem www.computer.org/internet/ IEEE INTERNET COMPUTINGReferences 1. C.L. Giles et al., “CiteSeer: An Automatic Citation Index￾ing System,” Proc. Conf. Digital Libraries, ACM Press, 1998, pp. 89–98. 2. C. Cattuto, “Semiotic Dynamics in Online Social Communi￾ties,” European Physical J. C, vol. 46, 2006, pp. 33–37. 3. S. Sen et al., “Tagging Communities, Vocabulary, Evolu￾tion,” Proc. Conf. Computer Supported Cooperative Work, ACM Press, 2006, pp. 181–190. 4. S.A. Golder and B.A. Huberman, “Usage Patterns of Col￾laborative Tagging Systems,” J. Information Science, vol. 32, no. 2, 2006, pp. 198–208. 5. C. Marlow et al., “HT06, Tagging Paper, Taxonomy, Flickr, Academic Article, to Read,” Proc. Conf. Hypertext and Hypermedia, ACM Press, 2006, pp. 31–40. 6. D.R. Millen et al., “Dogear: Social Bookmarking in the Enterprise,” Proc. Conf. Computer Human Interaction, ACM Press, 2006, pp. 111–120. 7. L. Page et al., The PageRank Citation Ranking: Bring Order to the Web, tech report, Computer Science Dept., Stanford Univ., 1998. 8. S. Brin and L. Page, “The Anatomy of a Large-Scale Hyper￾textual Web Search Engine,” Proc. Conf. World Wide Web, Elsevier Science Publications, 1998, pp. 107–117. 9. U. Farooq et al., “Supporting Distributed Scientific Collab￾oration: Implications for Designing the CiteSeer Collabo￾ratory,” Proc. Hawaii Int’l Conf. System Sciences, IEEE CS Press, 2007, p. 26c. Umer Farooq is a final year PhD student in information sci￾ences and technology at Pennsylvania State University. His dissertation research focuses on supporting creativity in computer-supported collaborative systems. Farooq has a BS in computer science from the National University of Computer and Emerging Sciences, Pakistan, and an MS in computer science from Virginia Tech. He is a student mem￾ber of the ACM. Contact him at ufarooq@ist.psu.edu. Yang Song is a fourth year PhD student in computer science and engineering at Pennsylvania State University. His research interests include developing and applying statis￾tical machine learning methods for text classification and clustering, pattern recognition, Web information retrieval, and data mining. Song has a BE in computer science from Zhejiang University, China. He is a student member of the IEEE. Contact him at yasong@cse.psu.edu. John M. Carroll is the Edward M. Frymoyer Chair Professor of information sciences and technology at Pennsylvania State University. His research interests include methods and the￾ory in human–computer interaction, particularly as applied to networking tools for collaborative learning and problem solving, and design of interactive information systems. Carroll has a PhD in experimental psychology from Colum￾bia University. He is a fellow of the ACM, the IEEE, and the Human Factors and Ergonomics Society. Contact him at jcarroll@ist.psu.edu. C. Lee Giles is the David Reese Professor of information sci￾ences and technology at Pennsylvania State University. His research interests are in intelligent Web tools, search engines and information retrieval, digital libraries, Web services, knowledge and information extraction, and data mining. Giles has a PhD in optical sciences from the Uni￾versity of Arizona. He was a co-creator of the popular search tools, CiteSeer, for computer science, and ChemXSeer, for chemistry. He is a fellow of the ACM, the IEEE, and the International Neural Network Society. Con￾tact him at giles@ist.psu.edu. 22 www.computer.org/internet/ IEEE INTERNET COMPUTING Social Search