The only thing you can be certain about when it comes to facebook is that something, somewhere within your profile or feed, is about to change. You never know what it’s going to be, and usually you can bet it’s going to be useless or annoying, but it’s going to happen. And don’t expect that zuckers has any interest in warning you, or even telling you after it’s been done. He won’t. I only hope that this information can help to lessen your post-facebook-change anxieties.