Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
```
the fitbit service is intended for your personal , non-commercial use . 

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