[{'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: Clear Gifs We employ a software technology called clear gifs that help us better manage content on our site by informing us what content is effective. Clear gifs are tiny graphics with a unique identifier, similar in function to cookies, and are used to track the online movements of Web users. In contrast to cookies, which are stored on a user's computer hard drive, clear gifs are embedded invisibly on Web pages and are about the size of the period at the end of this sentence. We do not tie the information gathered by clear gifs to our customers' personally identifiable information."}, {'role': 'assistant', 'content': 'This clause is unfair. The privacy practices mentioned are: Identifier_Cookie_or_similar_Tech_1stParty.'}]