[{'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 sometimes use information that we collect to improve the design and content of the Services, to customize our Services or to personalise our visitors' experience or to offer products, advertising, programs and services. We may also use this information in the aggregate to analyse usage of the Services or to offer products, programs, or additional services."}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]