This second edition of this highly impactful book examines the intersection of mental health and digital technology to make informed decisions about the new options provided by digital technology. It highlights the rise in online therapy and social media and examines the ethical dilemmas involved in online research to suggest that the benefits created far outweigh the possible risks. This expanded and updated second edition, includes practical suggestions for clinicians and public, builds upon the first by updating readers on recent developments in technology and research in this area since 2015. It explores ways in which governments and practitioners responded to the mental health crisis caused by the Covid-19 pandemic, and looks at the challenges as well as the benefits of our increasing interaction online.