Facebook announced Thursday that a feature in its mobile Messenger app that allows people to post auto-disappearing photos and videos has now begun rolling out globally following a previous soft launch in select countries like Poland and Australia. They're calling it Messenger Day because anything you post there disappears automatically after 24 hours, just like with Instagram Stories or those auto-vanishing status updates on WhatsApp.
You're in full control of the scope of your Messenger Day and can choose to share it with everyone on the service, people you're friends with or cherry-picked contacts.