Facebook launches 24-hour Stories and camera effects in its main mobile app

So far, Facebook has aped Snapchat's Stories in Instagram, WhatsApp, and even Messenger. So it makes sense that the main Facebook app for mobile platforms wouldn't be able to escape the Stories invasion either. And in fact it hasn't. Today the social network is announcing Facebook Stories. Yes, that's Snapchat Stories inside Facebook. They will be displayed like on Instagram, above your News Feed. And of course every photo and video you share in a Story disappears after 24 hours. By default content you put inside a Story only appears there. In order to make it show up on your Timeline or...