Social order is regulated from above by the law but its foundation is built on rms and customs, informal social practices that enable people to make meaningful and productive uses of their time and resources. Despite the importance of these practices in keeping the social fabric together, very little of the jurisprudential literature has focused on a discussion of these rms and customs. In Social Norms in a Wired World Steven Hetcher argues that the traditional conception of rms as rule-like linguistic entities is erroneous. Instead, rms must be understood as patterns of rationally governed behaviour maintained in groups by acts of conformity. Using informal game theory in the analysis of rms and customs, Hetcher applies his theory of rms to tort law and Internet privacy laws. This book will appeal to students and professionals in law, philosophy, and political and social theory.