[{'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: User Logs When using our Services, including engaging with, watching or producing any content in relation to our Services, certain user log information in Meitu applications will be automatically collected, including (i) details on when and how often our Services are being used, (ii) devices statistics, critical operation paths, errors, crashes, language and time zone and so on. These user logs are used to improve our Services and are NOT USED to identify and track our users individually."}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]