Oskar Sandberg will be talking about "Small worlds and dark networks" at Chalmers next Monday 16.00-17-00. Presumably it will be a version of the recent DEFCON presentation.
http://www.math.chalmers.se/~hegarty/colloquium.html http://www.freenetproject.org/
I may still be tied up with CC Japan and I fear it might be a wee bit to technical for me anyway ;-) But maybe someone else is interested?
Oskar is definitely a free software enthusiast and describes himself as "a Debian guy" IIRC.
/Kalle