[{'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: We reserve the right to change this Policy at any time. Such changes, modifications, additions or deletions shall be effective immediately upon notice thereof, which may be given by means including, but not limited to posting an updated privacy policy in place of this one on this page. In addition, certain modifications or other communications may be sent to you via email. You acknowledge and agree that it is your responsibility to maintain a valid e-mail address as a registered user, review this Policy periodically and to be aware of any modifications. Your continued use of our Product and Services after such modifications will constitute your: (a) acknowledgment of the modified Policy; and (b) agreement to abide and be bound by the modified Policy."}, {'role': 'assistant', 'content': 'This clause is unfair. The privacy practices mentioned are: Contact_E_Mail_Address_1stParty.'}]