Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
```
we may accept various forms of payment , including credit and debit cards , and payments made through paypal and facebook payments . 

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