[{'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: Advertising If you do not wish to participate in our advertising personalization programs, you can opt-out by following the directions provided within the applicable advertisement, or directly at our AdChoice program. The effect of an opt-out will be to stop personalized advertising, but it will still allow the collection of information for certain purposes such as usage, research, analytics and internal online services operation purposes). In addition to that, we do not allow third parties to track or collect your personal information on our sites for their own advertising purposes without your explicit consent."}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]