Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
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7.4.4 hosts should exercise due diligence and care when deciding who to add as a co-host to their listing ( s ) . 

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