[Gareth]

You could have it optionally anonymous. For example, if you want a follow-up then you'd include your contact details, but otherwise, if you wanted to, you could choose to submit answers anonymously albeit in the knowledge that you would get no feedback and if the issue required following-up then this would not be possible.

Saying this, however, it would leave the system open to abuse, so maybe that's another reason why they didn't include this.

Just my 2¢