Before Instagram copied it, Snapchat's rolling 24-hour Story feature was a quick way to keep up with anyone you follow on the app. There was just one problem: Viewing a new Story would play not only that person's post, but any other new posts in the queue. That means a (completely theoretical) viewing session could jump between a random celebrity selfie, video from a concert, something X-rated and then a video of someone's kids playing with their pets, and there was no way to know for sure what would be next. Now, Snapchat is pulling back on the Auto Advance feature in favor of Story Playlist.