Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
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linden lab has no obligation to monitor or enforce your intellectual property rights to your user content , but you grant us the right to protect and enforce our rights to your user content , including by bringing and controlling actions in your name and on your behalf ( at linden lab 's cost and expense , to which you hereby consent and irrevocably appoint linden lab as your attorney-in-fact , with the power of substitution and delegation , which appointment is coupled with an interest ) . 

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