[{'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: We may also use a variety of third party advertising networks, data exchanges, traffic measurement service providers, marketing analytics service providers and other third parties to, for example, serve advertisements, facilitate targeting of advertisements and/or measure and analyze advertising effectiveness and/or User traffic. Such services may enable us to display advertisements based on your Product and Service use. Targeting services enable us to, among other things, help deliver advertisements or other content to you for products and services that you might be interested in, to prevent you from seeing the same advertisements too many times and to conduct research regarding the usefulness of certain advertisements to you."}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]