The concept of using a mobile phone to “check-in” to a business such as a store or restaurant to declare one’s location is foreign to many. But to the 10 million users of geo-location social network foursquare, such activity has...
The concept of using a mobile phone to “check-in” to a business such as a store or restaurant to declare one’s location is foreign to many. But to the 10 million users of geo-location social network foursquare, such activity has...