[{'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: Demographic Data. Demographic data is also collected at our site. We use this data to tailor our visitors' experience at our site, showing them content that we think they might be interested in, and displaying the content according to their preferences. Some of this information may be shared with advertisers on a non-personally identifiable basis."}, {'role': 'assistant', 'content': 'This clause is unfair. The privacy practices mentioned are: Demographic_1stParty.'}]