Proof of X

Almost every social network of note had an early signature proof of work hurdle. For Facebook it was posting some witty text-based status update. For Instagram, it was posting an interesting square photo. For Vine, an entertaining 6-second video. For Twitter, it was writing an amusing bit of text of 140 characters or fewer. Pinterest? Pinning a com... See more

there’s one social network that is deceptively reliant on Pride: Strava. Strava lets athletes show off how far they biked or how far they ran. (Or, in certain cases, the cool shapes they drew with their biking or running route.)