Snapchat has scrapped its pay-to-replay feature, meaning repeat views of temporary videos and photos is now a free, one-time-only deal. Far, far more importantly, you can now swap your face with any visage that Snapchat auto-detects on your photo roll: no more attempting to awkwardly position your buddy in a photo, or point your phone at a laptop or magazine. Sure you can still do that, but why would you? The results are equal parts stupid and magical. Game changer.