La description de Messenger

Send unlimited messages and make free video and voice calls with your customers, friends, family no matter where they are, for free.
That's not all! They can share pictures, collaborate together with writeboards, broadcast videos, play games and a lot more while maintaining their privacy.
One-on-One Chat:
Start using messenger to stay in touch with everyone. The Who's Online list will automatically display your friends, your customers (or other online users) and a single click enables them to start chatting in real-time.
Chat rooms: Let create a buzz and gather into a single place using chatrooms. You can create public, password protected and invitation-only chat rooms. Audio conference in Chatroom.
Chat heads: Keep the conversation going while you use other apps.
Block/Unblock Users: Stop a contact from messaging or invading your personal space by blocking them.
Broadcast Video: Audio-Video Broadcast lets everyone showcase himself much more effectively. Conducting webinars in a one-on-one chat or in a chatroom is now just a few clicks away.
Key features:
Voice & Video Calling for one-on-one!
Text chat for both chatrooms and one-on-one
Photo & Video Sharing
voice recording
Smileys and Emoji Keyboard Support
Real-time Translation of Conversations
Invite Phone Contacts via SMS.