Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
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in some cases you may be asked by a third party site to link your profile on tripadvisor to a profile on another third party site . 

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