Have you seen the latest television commercial about the iPhone? It shows two iPhones side-by-side with some photo collage showing on both. One iPhone user swipes a photo (drags it) toward the edge of the screen toward the other iPhone. Automagically, the photo appears on the second iPhone, as if it was simply dragged there. What is the name of the app that does that? I would imagine that the two devices have to be on the same wi-fi network and both (evidently) have to be running that app.