Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
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in accordance with the us digital millennium copyright act ( `` dmca '' ) and other applicable laws , we have adopted a policy of terminating , in appropriate circumstances and at our sole discretion , accounts of users who are deemed to be repeat infringers . 

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. OPTIONS: ["Unilateral termination", "None", "Content removal", "Arbitration", "Contract by using", "Choice of law", "Unilateral change", "Jurisdiction", "Limitation of liability"].