Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
```
vimeo has the right , but not the obligation , to monitor all conduct on and content submitted to the vimeo service . 

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