[{'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: (f) Communicate With You: We may use your information to contact you (via message or other means) to maintain the App, including your Viber Out User Account, to comply with your stated communication preferences or to provide updates about other Viber services."}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]