Earlier this month Facebook CEO Mark Zuckerberg announced, in so many words, that his company is moving on from Facebook. Given the outsized importance Facebook and other social media have assumed in our public life, that news has not received as much attention as it deserves. In a memo paradoxically titled “A Privacy-Focused Vision for Social Networking,” the Facebook co-founder discerns a shift in the public’s taste from the openness of the digital town square to the privacy of the digital living room. “As I think about the future of the internet, I believe a privacy-focused communications platform will become even more important than today's open platforms,” he wrote.