About Me

I am Professor and Interim Chair in the School of Interactive Computing in the College of Computing at Georgia Tech, and a member of the Graphics, Visualization, and Usability (GVU) Center. I received my PhD from the Epistemology and Learning Group at the MIT Media Lab in 1997, and my BA in physics from Harvard University in 1987. I do research on collaborative computing, online moderation, and the use of social media in support of social movements..


I have a few official roles with the ACM:

  • * Chair-elect of the ACM CSCW community, the steering committee for the CSCW conference
  • * Chair of the SIGCHI Research Ethics Committee
  • * Member of the Executive Committee of the ACM Committee on Professional Ethics (COPE)
  • * SIGCHI Representative to COPE
  • * Member of the ACM Plagiarism Committee

I do expert witness work related to people's behavior on the internet.