[{'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: Opting Out Our usage monitoring and crash reporting services help us to fix bugs and improve the quality of the app. However, you may opt of of these services using the "Do Not Track" option on the Settings screen of the app. If you do so, your anonymous usage data will not be sent to Google Analytics, HockeyApp, or our servers.'}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]