In recent years, the expansion of the internet has given rise to significant changes in the health sector, affecting both access to information and the relationship between service users, medical professionals, the health industry and researchers. This monograph explores these issues and the ethical challenges they raise. It includes a working paper by Gema Revuelta and Cristina Aced of the Scientific Communication Observatory of the Pompeu Fabra University, an account of the development of a virtual nursing portal, by Gisel Fontanet of the College of Nurses of Barcelona, and contributions from a number of experts in the field.