Semantic wikis have been introduced for collaborative authoring of ontologies as well as for annotating textual and multimedia wiki content with semantic meta data. In this paper, we introduce a different approach for a semantic wiki based on an ontology meta model that has been especially customized for the deployment within a wiki. For optimal usability client-side technologies for graphical user interface have been combined with a simple and intuitive semantic query language. Single

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... of a wiki page can be annotated in an interactive and rather intuitive way to minimize the additional effort that is necessary for adding semantic annotation. Thus, the productivity and efficiency of a semantic wiki system will open up for non expert users as well, which is important for fostering the popularity of semantic wiki systems.