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