Foursquare's Digital Graffiti, a Legally Nerve-Wracking Taste of The Future

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Foursquare is really on the ascendant as location-based gaming/social networking blossoms among smartphone users. But there's a novel side-effect happening...users are indulging in "virtual graffiti" on places and people, too. It's the future, arriving a little early.

The Chronicle of Higher Education is reporting on this effect, based on information gathered from U.S. university and college campuses. Most uses are benign and represent a clever way to use the location-based-powers inside...