Semantic Wikis allow users to semantically annotate their Wiki content.
The particular annotations can differ in expressive power, simplicity,
and meaning. We present an elaborate conceptual model for semantic
annotations, introduce a unique and rich Wiki syntax for these annotations,
and discuss how to best formally represent the augmented Wiki content.
We improve existing navigation techniques to automatically construct
faceted browsing for semistructured data. By utilising the Wiki annotations
we provide greatly enhanced information retrieval. Further we report
on our ongoing development of these techniques in our prototype SemperWiki.