“Right now, we’re trusting Google because it’s good, but of course, we run the risk that the day will come when Google goes bad,” Wu told me. In his view, that day might come when Google allowed its automated Web crawlers, or search bots, to be used for law-enforcement and national-security purposes. “Under pressure to fight terrorism or to pacify repressive governments, Google could track everything we’ve searched for, everything we’re writing on gmail, everything we’re writing on Google docs, to figure out who we are and what we do,” he said. “It would make the Internet a much scarier place for free expression.” The question of free speech online isn’t just about what a company like Google lets us read or see; it’s also about what it does with what we write, search and view.