My talk focuses on two YouTube channels, Pronunciation Book and Webdriver Torso, both famously enigmatic “Internet mysteries,” and both recently solved. Both channels signify screens, through their organization as a YouTube channel and through the way specific videos simulate television or film frames and imagery. Both signify writing as well, using the form of the written character and a thematics of reading and speaking. Intense speculation surrounded both, with arguments for their authorship and intention by aliens, spies, and artists.