Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
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engage in any act that supercell deems to be in conflict with the spirit or intent of the service or make improper use of supercell 's support services . 

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