[batiudrami]

I mean. Facebook owns Whatsapp. And if you're not in a WhatsApp country, the US, Korea, Japan or China, you're in a Facebook Messenger country. They handle messaging for the vast majority of the western world.

The Facebook website itself is no longer particularly useful to me, other than that it is very good at events (both private and for public event discovery). The groups feature is also handy.

[fwn]

Other than with Facebook's messenger, your WhatsApp social graph is in your phones addressbook. If Facebook's WhatsApp service were to be gone tomorrow you could just install the next biggest messenger and beyond minor initial fragmentation all your friends would still be there.

This wouldn't work with the Facebook Messenger, since this social graph is not stored by the user.