Jon Kleinberg is on the faculty of the Computer Science Department at Cornell University, where he holds the position of Tisch University Professor.  His research focuses on issues at the interface of networks and information, with an emphasis on the social and information networks that underpin the Web and other on-line media.  He is a member of the National Academy of Engineering and the American Academy of Arts and Sciences, and serves on the Computer and Information Science and Engineering (CISE) Advisory Committee of the National Science Foundation, and the Computer Science and Telecommunications Board (CSTB) of the National Research Council.  He is the recipient of MacArthur, Packard, and Sloan Foundation Fellowships, as well as the Nevanlinna Prize from the International Mathematical Union, the ACM-Infosys Foundation Award in the Computing Sciences, and the National Academy of Sciences Award for Initiatives in Research.