[{'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: Communication preferences You can control the methods by which we may contact you about your account, and your buying and selling activities in the Communication Preference section within your My eBay. There, you can also control your member-to-member communications preferences setting and choose which newsletters and promotions you want to receive."}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]