"As an HCI researcher and practitioner, I am delighted to see, at last, a balanced view about the practice of ethnography within our field. This book presents an informative balance between the theory and practice of fieldwork methods, allowing researchers to conduct trials with confidence and understand the scope of the results that can be gained from these trials. At last, some of the most per-eminent people in their field show computer scientists and HCI researchers that it is valid to use ethnographic techniques without doing "proper" Sociology and Anthropology." Professor Gary Marsden, professor of HCI, University of Cape Town, South Africa