[{'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: Some browsers have incorporated "Do Not Track"\x9d features. Most of these features, when turned on, send a signal or preference to the website or online service that a user visits, indicating that the user does not wish to be tracked. Because there is not yet a common understanding of how to interpret Do Not Track signals, the Service does not currently respond to Do Not Track signals. We continue to work with the online industry to define a common understanding of how to treat Do Not Track signals.'}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]