[{'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 collect information about the value added services you are using over Viber and/or apps you have downloaded through Viber. This includes whether you are presently online, your personal preferences and the way you use that service. We may also tell other Viber users that you are using a certain service or app (to recommend them to try that service as well)."}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]