Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
```
we will notify our members of material changes to these terms and conditions by either sending a notice to the email address provided to us at registration or by placing a notice on our website . 

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