The interaction between humans and computers is evolving rapidly, impacting every aspect of human and organizational life. This book presents the latest developments in this field of Human Computer Interaction (HCI). It discusses issues related End User Computing, as well as issues related to the human side of IT. This book will set a framework for the social and organizational issues related to IT, giving emphasis to its role as facilitator of social relationships, enabling the development of the organizational and individual intelligence and helping to improve human conditions. In Issues of Human Computer Interaction, models and theories are presented together with practical cases that will help students, lecturers, researchers and managers to have a clear idea of what is going on in HCI, today.