Based on the experience with the CIDR Police project (http://www.nanog.org/mtg-0302/cidr.html), you can encourge operators to aggregate. My observation during that time was that operators: -> Didn't know they had a problem. -> Didn't know how to set up an aggregation policy -> Had no one paying attention to the advertisements -> Never had time to deal with the problem. Usually, nudging, encouragement, and clue helped. Having the NANOG Tutorials on-line helped - since we use them as on-line learning tools to tactfully clue-in people. Perhaps it is time for a new crew to get together to form a new CIDR Police team? Every week would get people from the CIDR Police knocking on the doors of their peers offering their help and asstance to enhance their aggregation. Hank and I are occupied with another project, but I'm sure we can brain dump to any who would like to build this new team. My $.02, Barry