[{'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: c) Marketing communications from BlackBerry BlackBerry may communicate with you by a variety of means, such as using the email address(es) that you associate to your BlackBerry device or your unique device identifier (e.g. PIN). BlackBerry may communicate information, surveys, marketing materials, advertisements or customized content which has been personalized to try to make it more relevant to you as part of your existing business relationship with BlackBerry. For example, we may do so where you have not unsubscribed from receiving such communications and it is permitted by law, where you have explicitly agreed to receive such communications, where you use free services which rely upon advertising (including targeted advertising based on profile information), or through utilizing aggregated data or data that has been made anonymous. BlackBerry may ask you from time to time if you would like to receive from BlackBerry or authorized third parties selected by BlackBerry additional announcements, news, offers or event invitations regarding BlackBerry and BlackBerry Offerings. You may also choose to provide BlackBerry with information in response to various BlackBerry promotions. If you agree to participate in contests, surveys, giveaways, reviews, or other promotions that BlackBerry sponsors or co-sponsors, please ensure that you read the Notice that may be associated with these initiatives in order to obtain further details about how your personal information will be managed. Typically, an unsubscribe mechanism is included with every BlackBerry marketing or commercial communication. Please visit the section below on "Managing your preferences" for more information on managing marketing or commercial communications from BlackBerry.'}, {'role': 'assistant', 'content': 'This clause is unfair. The privacy practices mentioned are: Contact_E_Mail_Address_1stParty, Identifier_Device_ID_1stParty.'}]