Jeremy Shoemaker pointed out this thread on Digital Point where an affiliate manager requested access to an affiliate's AdWords account.
The affiliate manager was trying to determine if the affiliate had violated the keyword policies of the merchant. Obviously, there is a lot of sensitive data in there and affiliates should be extremely reluctant to provide this information (we would say never provide it).
We would also say that the merchant should be using PoachMark - it is a far more efficient and privacy compliant system to ensure affiliate compliance than logging into the AdWords' accounts of all affiliates.
