Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
```
tripadvisor operates on a `` notice and takedown '' basis . 

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