Our encounters with websites, avatars, videos, mobile apps, discussion forums, GIFs, and nonhuman intelligent agents allow us to experience sensations of connectivity, interest, desire, and attachment—as well as detachment, boredom, fear, and shame. Some affective online encounters may arouse complex, contradictory feelings that resist dualistic distinctions. In this book, leading scholars examine the fluctuating and altering dynamics of affect that give shape to online connections and disconnections. Doing so, they tie issues of circulation and connectivity to theorizations of networked affect. Their diverse investigations—considering subjects that range from online sexual dynamics to the liveliness of computer code—demonstrate the value of affect theories for Internet studies.