was the titel of a well-attended invited talk at the Geodetic Colloquium in January at the KIT Karlsruhe Insitute of Technology, Geodetic Institute by Prof. Alexander Zipf. It presented some examples of our work on OSM quality assessment such as iOSManalyser, OSMatrix, but also research on transforming OpenStreetMap into 3D.
e.g. Barron, C., Neis, P., Zipf, A. (2014): A Comprehensive Framework for Intrinsic OpenStreetMap Quality Analysis. Transactions in GIS.