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Continue to ChatFoursquare's New 'Passive Notification' System in Action! https://geardiary.com/2013/12/10/foursquares-new-passive-notification-system-in-action/
Foursquare's New 'Passive Notification' System in Action! https://geardiary.com/2013/12/10/foursquares-new-passive-notification-system-in-action/