What kind of information leaks to the advertisers though? Do they have enough information to reaquire you (match your new ID to your old profile data) after a reset?
I'm sure that most advertisers can do this to some extent on the web, and use this to get around the users' ability to reset cookies.
I think advertising code could store the current ad ID on the phone. When the stored ID does not match the current ID, they could update the server with the new ID.
I'm sure that most advertisers can do this to some extent on the web, and use this to get around the users' ability to reset cookies.