Earlier this year, the executors of #DeleteFacebook engaged in a form of decentralized group therapy. Catharsis came in a zip file downloaded before deletion, containing the data you shared with Facebook—your friends, your photos, your posts—and with it, the data Facebook shared about you: the ads you clicked, the list of businesses that know where you live and where else you shop. A portrait of the modern digital identity—or, at least, part of it.