Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
```
7.4.2 hosts and co-hosts may agree on a fee ( `` co-host services fee '' ) in consideration for the co-host services provided by the co-host . 

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