Warren Sack is a software designer and media theorist whose work explores theories and designs for online public space and public discussion. His field of expertise is social computing. As a field of research, social computing explores two issues: (A) How can the insights of social, critical, cultural, and media theory be incorporated into and used to critique and evaluate software? and, (B) How can new media be designed to address outstanding social and political issues? Current and past projects include work in news media, Open Source software development, locative media, computer-supported translation, systems for visualizing and facilitating online discussions, and the design and analysis of network-based learning environments.