A human can figure it out. That's the real problem. You have a guy send in a support ticket / request, and then you pawn them off on someone who really cannot do anything about it. It really seems like support is just there to deflect rather than solve. Heck, look at the actual forum thread the article links to http://www.google.com/support/forum/p/AdWords/thread?tid=0bb...
It just seems like a purely algorithmic solution doesn't really scale and some human intervention is really necessary.
Humans don't scale either. That's why google doesn't use humans.
Sounds like the easy solution here is to have people submit their content to some google authentication system at the same time they submit to their blog. Problem solved.
They don't scale but Google can afford to hire enough to make the problem go away if they made it a focus. But not going to happen any time soon when they don't believe in customer service.