Facebook Messenger catches up with WhatsApp as it hits 1 billion users milestone

Facebook Messenger has joined the one billion users club, catching up with sister company WhatsApp. 
The world's largest social network shared the news via a blog post announcing that one billion people each month send messages via its private platform. 
To mark the occasion, Facebook is going to send a billion 'thank yous' to Messenger subscribers in the form of floating balloon animations that users can send to their friends within the app "to add a touch of whimsy and delight to any