Dirk Riehle leads the Open Source Research Group at SAP Labs in Palo Alto, California (Silicon Valley). Before this, he was the co-founder of an on-demand business software startup in Berlin, Germany, which strategically employed open source software. A fan of wikis since their inception, Dirk started the Wiki Symposium, a conference dedicated to wiki research and practice, see www.wikisym.org. He holds a Ph.D. in computer science from ETH Zurich as well as an M.B.A. from Stanford Business School (GSB). He welcomes email at dirk@riehle.org and blogs at www.riehle.org.