Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
```
we encourage you to review the terms from time to time to ensure that you understand the terms and conditions that apply to your access to , and use of , the services . 

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