Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
```
we can not and will not establish conditions that will require or encourage children to disclose personal data over and above what is reasonably necessary to participate in any activity features on our web sites . 

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