Where Are You Now? Design for the Location Revolution
http://www.uxmatters.com/MT/archives/000227.php

Follett, Jonathan
UXmatters
2007

Abstract:

Experience designers need to transition from designing for a single, static space--the desktop--to imagining the broad possibilities of the geospatial Web. For digital products and services, the next dimension of user experience we should consider during design is location.