FWIW, The learn more link in Settings-> General -> About -> Advertising says "iOS 6 introduces the Advertising Identifier, a non-permanent, non-personal, device identifier, that apps will use to give you more control over advertisers’ ability to use tracking methods. If you choose to limit ad tracking, apps are not permitted to use the Advertising Identifier to serve you targeted ads. In the future all apps will be required to use the Advertising Identifier. However, until then you may still receive targeted ads."
I think the ___location information and other stuff applies to everything app can do, which is in Privacy tab. I think this option is disable the identifier itself.
