Tony D. Sampson is reader in digital culture and communications at the University of East London. He is a cofounder of Club Critical Theory: Southend and director of the EmotionUX Lab at UEL.

Darren Ellis CPsychol is a senior lecturer in Psychosocial Studies at the University of East London. He completed a PhD in social psychology at Loughborough University. His research has focused on conceptualising emotion and affect in a variety of empirical settings, such as through everyday surveillance, stop and search practices, social media, and acts of self-disclosure.
Stephen Maddison is Professor of Cultural Studies and Director of Research in the School of Arts and Digital Industries at the University of East London. He is a co-director of the Centre for Cultural Studies Research at UEL [...] His research addresses questions of sexuality and gender, cultural politics and popular culture.

Foreword by Gregory J. Seigworth
Introduction: On Affect, Social Media and Criticality by Tony D. Sampson, Darren Ellis and Stephen Maddison
Part I: Digital Emotion
Introduction to Part I by Helen Powell
1 Social Media, Emoticons and Process by Darren Ellis
2 Anticipating Affect: Trigger Warnings in a Mental Health Social Media Site by Lewis Goodings
3 Digitally Mediated Emotion: Simondon, Affectivity and Individuation by Ian Tucker
4 Visceral Data by Luke Stark
5 Psychophysiological Measures Associated with Affective States while Using Social Media by Maurizio Mauri
Part II: Mediated Connectivities, Immediacies & Intensities
Introduction to Part II by Jussi Parikka
6 Social Media and the Materialisation of the Affective Present by Rebecca Coleman
7 The Education of Feeling: Wearable Technology and Triggering Pedagogies by Alyssa D. Niccolini
8 Mediated Affect and Feminist Solidarity: Teens Using Twitter to Challenge "Rape Culture" in and Around School by Jessica Ringrose and Kaitlynn Mendes
Part III: Insecurity and Anxiety
Introduction to Part III by Darren Ellis and Stephen Maddison
9 Wupocalypse Now: Supertrolls and Other Risk Anxieties in Social Media Interactions by Greg Singh
10 Becoming User in Popular Culture by Zara Dinnen
11 YouTubeanxiety: Affect and Anxiety performance in UK Beauty vlogging by Sophie Bishop
12 Chemsex: Anatomy of a Sex Panic by Jamie Hakim
13 Designing Life? Affect and Gay Porn by Stephen Maddison

Part IV: Contagion: Image, Work, Politics and Control
Introduction to Part IV by Tony D. Sampson
14 The Mask of Ebola: Fear, Contagion, and Immunity by Yig ¿it Soncul
15 The Newsroom is No Longer a Safe Zone: Assessing the Affective Impact of Graphic User-generated Images on Journalists Working with Social Media by Stephen Jukes
16 Emotions, Social Media Communication and TV Debates by Morgane Kimmich
17 The Failed Utopias of Walden and Walden Two by Robert Wright
Index
About the Contributors