||Discusses the idea of commons in the age of infosociety. Knowledge (etc.) is not a scarce resource. Non-exclusive, non-rivalous use is possible. That is, if you abstract from the material carrier of information. Knowledge, too, was a common good up until the middle ages, according to Volker. Now, although information itself is not a scarce resource, there is something else that is scarce: the attention of both creators and public (if different). The talk addresses the role of OpenSource in this era of IP "strong-arming".