[{'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: 1.4. The current version of the Rules, which are a public document, is available to any Internet user by clicking http://vk.com/privacy. The Site Administration has the right to modify these Rules. In case changes are made to these Rules, the Site Administration shall notify the users by posting the new version of the Rules on the Site permanently at http://vk.com/privacy not later than 10 days before such changes become effective. The previous versions of the Rules are stored in the Site Administration's documentation archive."}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]