I've attended a number of briefings on the RBN in recent months and there is actually quite a lot of information in the hands of cluefull researchers about who is behind this shadowy organization. Much of that information has been kept private and then fed to law enforcement who so far don't seem to have had much success in taking the RBN down due to its geographic location.
So it's nice to see mainstream press starting to cover this: http://www.washingtonpost.com/wp-dyn/content/article/2007/10/12/AR2007101202461.html
At the end they mention having the major NSPs block the RBNs ASNs but the problem with that is that they will just move somewhere else. What's really needed is for these people to go to jail and that will take Russian LE cooperation.