[{'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: In addition, UCWeb wants to keep you informed of developments of the UCWeb Services and of any promotional actions by UCWeb. We may ask you to participate in surveys in order to help us enhance the Services."}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]