[{'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: Usage and Preference Information: We collect information about how you and site visitors interact with our Services, preferences expressed, and settings chosen. In some cases we do this through the use of cookies, pixel tags, and similar technologies that create and maintain unique identifiers. To learn more about these technologies, please see our Cookie Statement."}, {'role': 'assistant', 'content': 'This clause is unfair. The privacy practices mentioned are: Identifier_1stParty, Identifier_Cookie_or_similar_Tech_1stParty.'}]