1.Google's new privacy policy is allowed to use the information you put into your account and download it. They can also share this information with other sites if this information is needed, but they do not share personal information.
2. However, you can refuse to any of your information being shared or even looked at by google users.
3.Google's dashboard is where users can view and edit your ads preference and see which categoris interest you, control who is allowed to view it when its posted, and then take out information about their services.