Facebook Messenger is a free mobile messaging app used for instant messaging, sharing photos, videos, audio recordings, and for group chats.
If you have a Facebook account you might have used Messenger to chat with your pals, this service is free and packed with features.
Be aware that meta is looking at your messages and you are not gonna be private, sending dick picks and calling hot babes naked might get your account banned.
If you want to use it to connect your RevealMe for instance you can do it but try not to be too dirty or naked to avoid problems.
Messenger is used by billions of people to send messages, pics, and video calls and is one of the top video chatting apps and sites.