Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
```
additionally , we may , in appropriate circumstances and at our sole discretion , suspend or terminate accounts of users who may be repeat infringers of third party intellectual property rights . 

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