Sorry if this has already been discussed - I was off the list at the time the paper was published.
Researchers at the University of Minnesota carried out an address harvesting attack on Freenet opennet. They estimate the size of the opennet at around 2,500 nodes at any time, from a long-term population of around 11,100. It took a single node 2.5 hours to collect the addresses of nearly all active opennet nodes. Obviously the concept behind this attack isn't news to anyone here, and I realise it's not something opennet tries to protect against, but I was interested to see some empirical figures. http://www-users.cs.umn.edu/~hopper/mcon-ccs.pdf Cheers, Michael
