Why Facebook Just Spent $19 Billion on a Messaging App -

WhatsApp was “one of the only services that could plausibly claim to be cannibalizing Facebook on a large scale, and one of a small few that pose it an existential threat.”
 
What’s more, buying WhatsApp fits into a pattern that’s emerged from Facebook. For me, there are three clear reasons why Facebook spent crazy money on the new messaging giant.

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Why Facebook Just Spent $19 Billion on a Messaging App - Robinson Meyer - The Atlantic