Facebook Messenger has amassed roughly 1.3 billion monthly users in just four years of existence, and this year it's set to dominate our lives even more.
So what can you expect?
Plus the app that's going to help organise your entire life.
And what you should... and shouldn't say to your colleagues on social media.
Social Media Presenter Aziz Al-Sa'afin spoke to Duncan Garner.
Watch the video.