Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
```
registration : to fully use the vimeo service , you must register as a member by providing a user name , password , and valid email address . 

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