Instagram is four years old, and in that short time it has become a hub of Millennial and teen communication, with 75 million users worldwide and nearly half of that number using the app daily.

Instagram is four years old, and in that short time it has become a hub of Millennial and teen communication, with 75 million users worldwide and nearly half of that number using the app daily. Instagram has also become “a vehicle for their daily musings” in a way the app’s creators likely didn’t intend, and, as we noted in our social media tracked trend coverage, it’s winning the image sharing app wars with young consumers. (Boston Herald)