[{'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: Changes to this Policy We may revise this Privacy Policy from time to time. The most current version of the policy will govern our use of your information and will always be at https://twitter.com/privacy. If we make a change to this policy that, in our sole discretion, is material, we will notify you via an @Twitter update or email to the email address associated with your account. By continuing to access or use the Services after those changes become effective, you agree to be bound by the revised Privacy Policy."}, {'role': 'assistant', 'content': 'This clause is unfair. The privacy practices mentioned are: Contact_E_Mail_Address_1stParty.'}]