While each of the three IARU regions has a monitoring program, the Region 1 monitoring program seems to be the best organized. They have a great website, and their monthly newsletters for 2010-2012 are all available there. In addition, the site has other information including radar systems on shortwave (PDF, 10 MB), frequency allocation table, and How to start an Intruder Watch.
Comparing this to the IARU Region 2 Monitoring System Web page, you can see how good it is. The last bulletins, for example, were published in 2009.