This paper shows how semantic web techniques can be applied to solving problems of distributed content creation, discovery, linking, aggregation, and reuse in health information portals, both from end-user’s and content publishers’s viewpoints. As a case study, the national semantic health portal HEALTHFINLAND is presented. It provides citizens with intelligent searching and browsing services to reliable and up-to-date health information created by various health organizations in Finland. The system is based on a shared semantic metadata schema, ontologies, and mash-up ontology services. The content includes metadata of thousands of web documents such as web pages, articles, reports, campaign information, news, services, and other information related to health.