Hiding a comment means it will disappear from your point of view. However, the person who posted it, along with any of your mutual friends, will still be able to view it. But what kind of comments are worth hiding? Well, maybe the ones that could spoil a TV show you’re watching, for example. And finally, reporting a comment is kind of like a citizen’s arrest. Well, not really… but it does mean that if you see an offensive comment, you can flag it to the Facebook police who will then decide if it has violated its community standards. If it does, it’ll be deleted.