Facebook 刚刚迎来一个非常丰收的财季，其中移动端的数字令人印象深刻。Mark Zuckerberg 自豪地表示：
Between Messenger and WhatsApp, I think we’re around 60 billion messages a day, which I think is something like three times more than the peak of global SMS traffic.
Backchannel 一篇文章回顾了Facebook 力推 Messenger 的决心：
Two years ago Facebook stopped allowing messaging in its iPhone and Android apps, and forced people to download its standalone Messenger app to exchange private Facebook messages.
To many of Facebook’s most loyal users, this seemed like a very dumb idea. As my sister-in-law posted on my page at the time: “I absolutely hate it. One centralized app where you can do everything you need to do is so much more efficient from a user perspective and a phone/memory one too.”
Of course the Messenger app already existed. It got its start back in 2011, when Facebook paid a reported $40 million for the group messaging app Beluga and recruited its founders. By the end of 2011, they had launched the standalone app, but it was a mess — not as useful as email or as widely adopted as, say, BBM. Hardly anyone downloaded it.
现在来看，当时的赌注是非常的正确也非常的重要，正是Messenger、收购的 Whatsapp，让 Facebook 抓紧了移动互联网以及 bot 时代的重要机会。