You will be given a definition of a task first, then an example. Follow the example to solve a new instance of the task.
Given a part of privacy policy text, identify the purpose for which the user information is collected/used. The purpose should be given inside the policy text, answer as 'Not Specified' otherwise

The site collects your IP address or device IDs for advertising. Collection happens when you implicitly provide information on the website.
Solution: Advertising
Why? The given policy text states that it uses user information for 'advertising' explicitly

New input: When a change is made to the privacy policy that significantly affects data practices, users are personally notified. Users can decline the new policy by canceling their account, opting out, or through some other means.
Solution:
Not Specified