 "Facebook, social media")
At a recent all-hands meeting with employees, Kevin Systrom, a founder and chief executive of Instagram, showed off one of his favorite charts: Days to Reach the Next 100 Million Users.
“It’s the only graph in the company that we celebrate when it declines,” Systrom said in an interview last week at Instagram’s headquarters in Menlo Park, Calif.
Not long ago, the Facebook-owned photo-based social network grew at a steady clip. Every nine months, without fail, Instagram added another 100 million users somewhere in the world. Then, last year, it began racking up more new users every day. It grew to 600
