[{'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: Revisions to this Privacy Policy Any information that is collected via our Services is covered by the Privacy Policy in effect at the time such information is collected. We may revise this Privacy Policy from time to time. If we make any material changes to this Privacy Policy, we\'ll notify you of those changes by posting them on the Services or by sending you an email or other notification, and we\'ll update the "Last Updated Date" above to indicate when those changes will become effective.'}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]