Shifting Worlds of Strangers: Medium Theory and Changes in “Them” Versus “Us”*

Macrolevel analyses of the influence of different communication technologies are more difficult to test and apply than the results of focused studies of particular media messages. Nevertheless, “medium theory” is of potentially great significance because it outlines how media, rather than functioning simply as channels for conveying information between two or more social environments, are themselves social contexts that foster certain forms of interaction and social identities. This article uses a medium‐theory perspective to address one variable related to “technological communities”—the changing boundaries between “them” and “us.” The ways in which oral, print, and electronic modes of communication each foster a different balance between strangers and “familiars” are outlined.