[{'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: • Choose whether Pinterest will be customized for you using information from off-Pinterest websites or apps. If you have a Pinterest account and want to control how your off-Pinterest data is used to tailor your experience, you can visit your account settings and update your preferences. If you don't have a Pinterest account, or don't want us to customize Pinterest for you when you're signed out, you can opt out here."}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]