Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
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as part of your use of the fitbit service , you may receive notifications , text messages , alerts , emails , and other electronic communications . 

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