[{'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: Yahoo Mail Yahoo Mail is a free web-based email service. In order to use Yahoo Mail, you must be a registered Yahoo user. You may also purchase premium services such as Mail Plus for a fee. This Privacy Policy applies to the newest version of Yahoo Mail."}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]