Well Steve, it's like this: There are (a) security experts, (b) "security experts", and (c) guys that spend their day making things usable in spite of what the rest of the net throws in their AS's direction. You're an example of one, I'm an example of another, and the advocates of static bogon filters are an example of the third. Figuring out which is which is left as an exercise for the reader...
This makes it sound like we are talking about some kind of network security issue. We aren't! The fundamental issue is OPERATIONS and has to do with policy and management of that policy. Bogon filters are an example of a policy implementation. It should be no surprise to anyone in operations that when technical people implement a policy which does not actually exist within the company, there is nobody to manage that policy implementation and it eventually becomes orphaned. One might argue that if a company is not capable of setting a policy and managing that policy, then you should not implement the policy at all. --Michael Dillon