For that reason, Instagram's transformation from meditative space to multimedia sandbox could easily be blamed on teens. Increasingly, the app just isn't designed for those early adopters who fondly recall a quieter time online, but for young people who, after all, are the future. Facebook has essentially bottomed out in that department—in 2015, 71 percent of teens told Pew they used Facebook, compared to just 51 percent three years later. But 72 percent of teens report using Instagram, according to a Pew Research Center report published in May. That means the app is second only in all of social media to YouTube, the horizontal video service used by a whopping 85 percent of teens. Instagram's brighter, buzzier design and investment in the eerily-YouTube-like IGTV service may be attempts to gain—and, more critically, maintain—such widespread appeal among Gen Z.