More and more we're hearing about location-based socializing in the news – for example, Loopt and Latitude for keeping track of friends in a geographical sort of way, Facebook's new Places, the more game-like Foursquare, and Glympse for tracking kids for specific periods of time (like between 9pm and "curfew," up to 4 hours max). Well, in case you'd like a little primer on these location-based … [Read more...] about Social location-sharing