TweetFacebook has made geo-location a legitimate topic to discuss with the launch of Facebook places and access to over 500 million users. Location based services such as: Foursquare, Gowalla, SCVNGR, Yelp, Whrrl, Where, Brightkite, Loopt, MyTown and Tri-Out allow the 30% – 40% of Americans with a smartphone & GPS the ability to “check-in” to locations. [...]








