The war of the tiny media sharers continues. Instagram has had an internal update which allows videos shared to the service to loop. Just like Vine, whenever you tap the "play" button on an Instagram video, you're going to be watching that video over and over and over again, prompting Vince super-sharers to trade services. If they do so dare, of course. This is the next step in Social Networking, after all - adding ALL the features of competing services to do better than they.