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

Example input: The site collects your IP address or device IDs for advertising. Collection happens when you implicitly provide information on the website.
Example output: Advertising
Example explanation: The given policy text states that it uses user information for 'advertising' explicitly
Q: The site collects your unspecified information for advertising. Collection happens when you implicitly provide information by an unnamed service or third party. You can opt in for data collection for the use of your information.
A:
Advertising