[{'role': 'user', 'content': "Analyze the following clause from a privacy policy and determine if it's fair or unfair. Also identify any privacy practices mentioned: 9. PRIVACY POLICY CHANGES Zedge may, in its sole discretion, change this Privacy Policy from time to time. Any and all changes to Zedge's Privacy Policy will be reflected here and the date new versions are posted will be stated at the top of this Privacy Policy. Non-material changes and clarifications will take effect immediately, and material changes will take effect within 30 days of their posting on the relevant Website or Mobile App. Where the changes are material, we may also choose to email all our registered users with the new details and it is within our sole discretion whether or not we choose to do so. The date of the most recent revisions will also appear on this page. If you do not agree with this Privacy Policy, please do not use or access Zedge, and if you do not agree to any changes we make in the future, you must terminate your registration with Zedge."}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]