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