Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
```
we do not review or endorse any of those websites or services . 

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