[{'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 use information about how you interact with Tumblr in order to personalize it for you, to keep both you and our community safe from harm, and to improve Tumblr for everyone who uses it."}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]