Here's The Chart That Scared Zuckerberg Into Spending $1 Billion On Instagram

According to New York Times reporter Evelyn Rusli's telling of the tale: Sometime on April 6 – a couple Fridays back – Mark Zuckerberg picked up the phone, called Instagram CEO Kevin Systrom, and told him that he wanted to buy his company. The billion dollar deal was done in the next 48 hours. What prompted Zuckerberg to act so aggressively? Two things. The first was some version of this AppData...