What is Ontologies

Web 2.0 Applications have gained much power and usability in the last years. A particular case is medicine Web sites, like forums, wikis, and others. In most cases, these sites provide general information without making contact with the physicians. On other side, the CDSS (Clinical Decision Support Systems) are very useful applications, and many of them are ontology based. In this chapter, the authors propose a social Web application that allows patients to make contact with their physicians through a CDSS list of signs. This application combines social Web, CDSS, and Web services.