The line between Instagram and Facebook is getting very, very thin—and here's why you should care

An algorithmic feed. Live video. A seemingly unquenchable thirst to copy Snapchat. Sound like an app you know? You'd be forgiven for thinking the answer was Facebook, though, it's not. 
Instagram's the app you're looking for, and it's been steadily moving closer to Facebook (which owns Instagram) in recent months. 
And on Tuesday, the company took the next step in that direction, and announced it was adding the ability to "like" comments within posts. 
While Instagram CEO Kevin Sy