Regarding longevity and increase of chronic diseases traditional medical care faces tremendous financial and human resource problems. Is self service medicine as follow up of traditional care or as an approach in its own right the answer? Is internet the place where self service medicine takes place? The book distinguishes stages of such an endeavor. It offers an architecture model and client appraisal schemes as tools to design and critically assess consumer health informatics services. Selected examples teach the usage of the tools. Patient safety, legal and ethical appraisal, and business models add to the systematic coverage.