Dmitri Williams is an associate professor at the USC Annenberg School for Communication and Journalism, where he is a part of the Annenberg Program on Online Communities (APOC). He received his Ph.D. from the University of Michigan in 2004. His research focuses on the social and economic impacts of new media, with a focus on online games. Williams was the first researcher to use online games for experiments, and to undertake longitudinal research on video games. He continues to study the psychology of online populations, with projects involving community, identity, sexuality, economics and neuroscience. He is also the CEO of Ninja Metrics, a university start-up focusing on big data.