Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
```
this may include the opportunity for you to link your fitbit account , fitbit data , or the fitbit service with third-party services . 

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