Checked-In: How To Use Gowalla, Foursquare and Other Geo-Location Applications For Fun and Profit by Tabin, Mr. Herbert, Agranoff, Mr Craig (2010) Paperback
Geo-location services--mobile applications that allow users to share their physical whereabouts with their networks--are quickly gaining momentum. Checked-In gives you what you need to know to both... This description may be from another edition of this product.
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