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> Instagram is basically the only platform you can contact everyone you known on

Forgive my ignorance but I thought Instagram was just a place to upload random photos.

It also has a chat, and for many it has become the main channel to stay in touch with each other. I'm not sure why either, I guess it's because they spend more time in the app than other messengers, so they might as well chat on it too.

There is a whole messenger client in there - "Swapping instas" is the new "can I get your phone number" in some circles.

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