Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
```
access to the service through third parties may be available or discontinued at the discretion of linden lab . 

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