Of course, people can always leave Facebook. But you don’t even have to be on Facebook to be on Facebook. When I entered Doctorow’s name into Facebook’s search engine, I got a page that included a neatly formatted teaser link to his Wikipedia entry, plus a section titled, “Photos of my friends and Cory Doctorow.” He turns up in two pictures, uploaded and tagged by people who I’m friends with on the platform. At the bottom it reads, “This Page is automatically generated based on what Facebook users are interested in, and not affiliated with or endorsed by anyone associated with the topic.”