Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
```
because of this , in your communications with linden lab , please keep in mind that linden lab does not accept or consider any unsolicited ideas or materials for products or services , or even improvements to products or services , ( collectively , `` unsolicited ideas and materials '' ) . 

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