This document summarizes a presentation given by Dr. Karsten Ehms on knowledge management at Siemens. It discusses Siemens' large, decentralized structure and focus on innovation. It then outlines Siemens' use of social software platforms like blogs, wikis and communities for knowledge sharing and networking across the organization. Some challenges of these platforms discussed are unequal participation, managing growth expectations, and ensuring a variety of use cases. The document emphasizes that networking is a key driver of benefits from social software for knowledge management.