Loneliness affects quality of life, life satisfaction, and well-being, and it is associated with various health problems, both somatic and mental. This book takes an international and interdisciplinary approach to the study of loneliness, identifying and bridging the gaps in academic research on loneliness, and creating new research pathways. Focusing in particular on loneliness in the context of new and emergent communication technologies, it provides a wide range of theoretical and methodological perspectives and will contribute to the re-evaluation of the way we understand and research this contemporary global phenomenon.