Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
```
you acknowledge that your use of the service is subject to this risk and that you knowingly assume it and make your decisions to participate in the service , contribute content and spend your money accordingly . 

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