This document discusses the rise of location-based social networks and augmented reality applications. It notes that Foursquare and similar services gained popularity in the late 2000s and 2010s by allowing users to check-in at locations. The document suggests augmented reality could integrate with social networks like Twitter to provide place-based annotations and information to users as they move around in the real world.

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by Eric Fischer

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by Eric Fischer

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by Eric Fischer

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