Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
```
request , accept or make any payment for listing fees outside of the airbnb platform or airbnb payments . 

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