Instagram now has half a billion users. How did the photo-sharing app outpace Twitter and keep us so addicted?
I hope this isn’t too personal, but I need to fess up about something: I have an addiction. It’s nothing life-threatening or even all that serious, but I realized recently just how long it’s been going on. For nearly six years, my brain has routinely been flooded with hits of dopamine from a daily habit that I just can’t seem to kick. My drug of choice? This is kind of embarrassing. But it’s Instagram.
