Werner Geyer  IBM Research Division, Thomas J. Watson Research Center, 1 Rogers Street, Cambridge, Massachusetts 02142 (werner.geyerus.ibm.com). Dr. Geyer is a research staff member in the Collaborative User Experiences Group. He is currently investigating the problem of activity attention management. He has been working on Activity Explorer and activity-centric collaboration for more than four years. He has an M.S. degree in information technology and a Ph.D. degree in computer science, both from the University of Mannheim, Germany. Dr. Geyer is a member of the Association for Computing Machinery.

Michael Muller  IBM Research Division, Thomas J. Watson Research Center, 1 Rogers Street, Cambridge, Massachusetts 02142 (michael_mullerus.ibm.com). Dr. Muller is a research staff member in the Collaborative User Experiences Group. He has a Ph.D. degree in cognitive psychology from Rutgers University. As a member of Computer Professionals for Social Responsibility and the Association for Computing Machinery, Dr. Muller is an internationally recognized expert in participatory design.

Martin Thomas Moore  IBM Software Group, 5 Technology Park Drive, Westford, Massachusetts 01886 (martmoorus.ibm.com). Mr. Moore is a product designer for the IBM Workplace™ family of software. He is the lead designer for the development team that is adapting Activity Explorer for IBM Workplace. He holds a B.S. degree in graphic design from North Carolina State University.

Eric Wilcox  IBM Research Division, Thomas J. Watson Research Center, 1 Rogers Street, Cambridge, Massachusetts 02142 (eric_wilcoxus.ibm.com). Mr. Wilcox is a design researcher in the Collaborative User Experience Group. Mr. Wilcox earned B.S. degrees in computer science and mathematics from Oregon State University and an M.S. degree in Human Computer Interaction from Carnegie Mellon University. Mr. Wilcox currently chairs the AIGA Boston Experience Design Community of Interest.

Li-Te Cheng  IBM Research Division, Thomas J. Watson Research Center, 1 Rogers Street, Cambridge, Massachusetts 02142 (li-te_chengus.ibm.com). Dr. Cheng is a research staff member in the Collaborative User Experiences Group. He is currently investigating how visualizations can provide further insight in software development and foster collaboration among developers. He has a Ph.D. degree in electrical engineering from Memorial University of Newfoundland and M.S. and B.S. degrees in systems design engineering from the University of Waterloo. Dr. Cheng is a member of the Institute of Electrical and Electronics Engineers and the Association for Computing Machinery.

Beth Brownholtz  IBM Research Division, Thomas J. Watson Research Center, 1 Rogers Street, Cambridge, Massachusetts 02142 (beth_brownholtzus.ibm.com). Ms. Brownholtz is a senior software engineer in the Collaborative User Experiences Group. She was a developer on the Activity Explorer research prototype and on the team that brought AE technology into IBM Workplace. Ms. Brownholz holds a B.S. degree in computer science from Rutgers University.

Charles Hill  IBM Software Group, 5 Technology Park Drive, Westford, Massachusetts 01886 (charleshus.ibm.com). Mr. Hill is a Senior Technical Staff Member and a user-experience designer working on collaboration and portal software. He has a Ph.D. degree in mechanical engineering from Imperial College, London, and an M.Des.RCA in industrial design engineering from the Royal College of Art, London. He was the user-experience design lead for Lotus QuickPlace^®. Mr. Hill's current focus is on social software and activity-centric computing.

David R. Millen  IBM Research Division, Thomas J. Watson Research Center, 1 Rogers Street, Cambridge, Massachusetts 02142 (david_r_millenus.ibm.com). Dr. Millen is a research manager in the Collaborative User Experiences Group. Through field studies and development of new social software applications, his group studies the social and technological implications of online communities and large-scale collaboration. Dr. Millen has a Ph.D. degree in cognitive psychology from Rutgers University.