Facebook Messenger's 'vanish mode' makes messages disappear

Facebook is adding "vanish mode" to Messenger.

The feature makes messages disappear after they're seen and the chat is closed. 

The idea, according to Facebook, is to "be in the moment, and share with close friends and family without worrying about your chats sticking around." In a press release, Facebook says the feature is best suited for memes, GIFs, stickers, or reactions that are cool when you send them, but you may not want them to stick in your chat history. 

To turn the feature on, swipe up on your phone in an existing chat thread, and you'll be in vanish mode. If you swipe up again, you'll return to regular chat. To familiarize users with the feature, Facebook added an explainer screen that appears when you first swipe up.  Read more...