[{'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: 3. THIRD PARTY ADVERTISERS - YOUR AD CHOICES We use third-party advertising companies to serve ads when you visit the Websites and/or use the Mobile Apps. These companies may use information about your visits to any of the Websites and other websites and the Mobile App(s) and other mobile applications in order to provide advertisements about goods and services of interest to you. You have the ability to opt out of the use of your information for purposes of online third-party advertising. If you would like more information about your choices, visit aboutads.info. You may have the ability to manage tracking and ad preferences on your mobile device from your devices settings. We do not respond to Web browser "do not track" signals or other similar mechanisms.'}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]