[{'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: In particular, in relation to targeted advertising, we use third-party advertising companies to serve ads when you visit our Website. These companies may use information about your visits to this and other websites in order to provide advertisements about goods and services of interest to you. If you would like more information about this practice and to know your choices about not having this information used by these companies, please visit this page."}, {'role': 'assistant', 'content': 'This clause is unfair. The privacy practices mentioned are: Demographic_3rdParty.'}]