[{'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: Both Users and Registered Users must agree to these User Terms before using the Website, Application or Services. However, certain additional product features will be made available to Registered Users from time to time, which may not be available to non-registered Users."}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]