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Facebook turns over mother and daughter’s chat history to police resulting in abortion charges
(www.theverge.com)
This is a most excellent place for technology news and articles.
Maybe you're right, but I'd be hesitant to say WhatsApp user's contacts list would be worth US$ 20B.
My theory is they bought WhatsApp just because it was organically growing to be the dominant messaging app, and Facebook didn't want to lose this marked and bought them to squash the competition.
contact list? not really.
knowing who they talk to, how often, where from, for how long on average, and, in case of the countries where Whatsapp for Business is popular, what businesses do they spend money at? probably quite worth it.
The WhatsApp Business stuff is a more recent development. When FB bought them they had very little to work with.
I'd guess Whatsapp for Business stuff has been developed due to how many businesses have already been using Whatsapp. and even without it, when the same number is being listed on the business' Facebook page, it's pretty easy to connect the dots. I admit though, I used some shorthand when writing my previous comment. I meant "where Whatsapp is used to contact businesses".