I joined Twitter in March, 2007. My first tweet was anything but glorious, “Sitting in Networking class. Not enjoying it.” Ten tweets before receiving my first like. Another fifty before my second. Reading my early tweets, I was confused by this lack of likes. I slowly remembered: likes didn’t exist. Instead there were favorites, bookmarks rather than algorithmic boosts. The absence of replies also felt odd. I was clearly having conversations with two college classmate (the only people I knew on...