[{'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: Communicate with you. The information we collect lets us keep you posted on Kik's latest product announcements, software updates, upcoming events and any messages you have waiting on Kik if you haven't been active for a while. If you don't want to be on our mailing list, you can opt out anytime by updating your preferences."}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]