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

[Q]: A user type outside of our label scheme can opt out (via a link) from the use of contact information by the site, which uses it for marketing purposes.
[A]: Marketing

[Q]: When a change is made to the privacy policy that significantly affects data practices, users are notified when visiting the website. Users can participate in a process to influence the change.
[A]: Not Specified

[Q]: The site collects your location information for an additional (non-basic) service or feature. Collection happens when you explicitly provide information on the website, and your data is identifiable. You can choose not to use the service or feature.
[A]:
Additional service/feature