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Yes, it is absolutely very popular, that's not what we're talking about here. The problem is that given a random person off the street, how can you figure out
by henrikschroder 4y ago
Yes, it is absolutely very popular, that's not what we're talking about here.
The problem is that given a random person off the street, how can you figure out which messenger apps you have in common? And assuming everyone outside the US uses WhatsApp like the grandparent poster I replied to did, doesn't work.