[{'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: 15. Changes to this Policy We reserve the right to make changes to this Privacy Policy at any time to reflect changes in the law, our data collection and use practices, the features of our Services, or advances in technology. Please check this page periodically for changes. If we make any material changes to this Privacy Policy, we will post the updated Privacy Policy here and notify our Registered Users by email or by means of a notice on the Services. Save for urgent changes (such as those required by law) we will post such a notice on our website prior to the changes becoming effective. Please review the changes carefully. Your continued use of the Services following the posting of changes to this policy will mean you consent to and accept those changes. If you do not consent to such changes you can delete your account by following the process described in the "De-activating Your Profile" and "Leaving ASKfm" sections of this Privacy Policy.'}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]