Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
```
we have the right , but not the obligation , in our sole discretion to edit , refuse to post , or remove any user content . 

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