A future technology in smartphones that will enable us to hold our camera up to an area and the phone will detect live the nearest cafes or toilets etc and information about them. This will work using GPS. It can also work for things and people.
10 Augmented Reality Apps for Kids: These AR apps are meant to accustom kids into using and enjoying augmented reality apps so that they can easily maneuver their way through whatever technological advances wait for them 10 or 20 years in the future.
18 Photos Of London's Past, Blended With Its Present
Not really a social medium but a brilliant example for digital storytelling. With the StreetMuseum iPhone app from the Museum of London you can look at historical views of the city while you walk through London.
Examples of using Aurasma (Augmented Reality) in the elementary music classroom to explore composers and listen to gifted young performers. Aurasma is free for iPad and web site. Video examples included. QR codes... so last year! :)