Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
```
we will contact you by e-mail or provide you with information by posting notices on the products . 

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