Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
```
a tripadvisor affiliate may act as an advertiser 's limited agent solely for the purpose of transmitting your payment to the advertiser . 

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