Keynote given at the 1. DGI-Konferenz, 62. DGI Jahrestagung: Semantic Web & Linked Data in Frankfurt, Germany, (held between 7th and 9th of October) on the 7th of October, 2010.
The slides are available in PDF, OpenDocument Presentation Format, PowerPoint, and Open XML (a.k.a. PowerPoint 2007) formats.