Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
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if after a good faith effort to negotiate one of us feels the dispute has not and can not be resolved informally , the party intending to pursue arbitration agrees to notify the other party via email prior to initiating the arbitration . 

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