[{'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: Web Beacons and pixel tags: A "web beacon" or a "pixel tag" is an electronic image (often not visible to the end-user) that allows Rovio to count users who have visited certain pages or viewed certain advertisements. Additionally, e-mails and other electronic communications Rovio sends to you may contain pixel tags that enable Rovio to track your usage of the communication, including whether the communication was opened and/or what links were followed, if any.'}, {'role': 'assistant', 'content': 'This clause is unfair. The privacy practices mentioned are: Contact_E_Mail_Address_1stParty, Identifier_Cookie_or_similar_Tech_1stParty.'}]