Mobile Communications, Social Networks, and Urban Travel: Hypertext as a New Metaphor for Conceptualizing Spatial InteractionFootnote∗

∗This article is based on the Fleming Lecture in Transportation Geography I delivered at the 102th Annual Meeting of the Association of American Geographers, Chicago, 7–11 March 2006. I thank Jean-Paul Rodrigue for making arrangements for the lecture, and the Department of Geography at the University of Washington for providing support to me for this lecture. I am also grateful to the audience, to Bill Black (who served as the discussant of the session), and to three anonymous reviewers for their very helpful comments. The views expressed in this article remain my responsibility.

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