Ever since the advent of the online encyclopedia Wikipedia, the average Web user knows what a wiki is. The term 'semantic wiki', on the other hand, is likely to evoke a quizzical look from most people. It refers to a tool that combines the wiki idea with the advantages of the Semantic Web. To fi nd out what the concept entails and to understand its potential applications, one only needs to take a look at the work of LMU computer scientists Professor François Bry and Klara Weiand.