He has ongoing projects studying mass interaction in Wikipedia and technology and media use in the home. He has published research on collaborative authoring, recommendation systems, organizational memory, and public use of large screen displays. His research interests span Computer-Supported Cooperative Work (CSCW) and Human-Computer Interaction (HCI). He earned his Ph.D. in Information and Computer Science at the University of California, Irvine. He worked at FX Palo Alto Laboratory in the Personal and Mobile technology group and at AT&T Labs, HCI group. He was recently a Program Director for Human Centered Computing (HCC), Network Science and Engineering (NeTSE), and Social Computational Systems (SoCS) programs at the National Science Foundation.