Yesterday we had the review of the European project MACE (Metadata for Architectural Content in Europe) looking back the three years this really was a great project. Check out http://mace-project.eu for the content portal with a variety of ways to explore content via different interfaces and metadata classifications. We mostly worked on context and competence metadata. So and competence metadata is really a special issue all want it but rarely educators and teachers have a good or even any idea about competences or competence metadata. So one main result I see out of the project is that research needs to take into account different ways to specify and collect competence information and metadata ranging from classical taxonomy approaches to fully bottom up driven folksonomy.