From what i read on that report, some of it will rely on sellers reporting buyers they feel are rorting the system.

Without those reports, ebay won't be as likely to recognise repeat offenders or those who have upset more than one seller.

I have heard there is an ebay lunch meeting here in Melbourne in early Sept. I guess they have similar meetings in other states. I know someone invited to the Melb meet (not sure they will go though). I would guess buyer abuse of money back policy would be topic that comes up. My friend said it is a real problem at times.