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