ABSTRACT
Both authors contributed equally to this article and order of attribution was randomly determined. The authors wish to thank Richard Bartle, Ted Castronova, Julian Dibbell, Michael Froomkin, James Grimmehnann, Ren Reynolds, Nick Yee, Unggi Yoon, and the organizers of the State of Play Conference, especially Beth Noveck. They also wish to thank the many individuals who contributed thoughts and comments to the Terra Nova web log during fue writing of this essay.
