[{'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: Stop Sharing of Lists. Many customers appreciate the communications they receive from the third party providers of goods and services to whom our B2B, emedia, Salesify and Ookla divisions provide lists of our customers, but if you no longer wish to receive messages from individual providers, follow the unsubscribe link and instructions at the bottom of the message. To stop receiving messages from all third parties- including messages from third parties to whom you provided your Personal Information in order to download a white paper, case study or other document, or to enter an advertiser-sponsored sweepstakes or other contest-please send an email with your preference request changes to ZDLegal1@ziffdavis.com and include "Privacy Policy" in the subject line.'}, {'role': 'assistant', 'content': 'This clause is fair. The privacy practices mentioned are: nan.'}]