Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
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we may do this through forums , blogs , message boards , social networking environments , social communities , e-mail and other functionality . 

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