We are currently working on the feature that allows you to block users. When you block a user they will not be able to:
1. Review your items
2. Comment on your items (even if they already reviewed/commented)
3. Message you
4. Add you as a friend or fan

This feature is on schedule to deploy on Thursday.

Will there be ‘undo block’ button? (not that necessary, we could always ask your sister to unblock someone if we make an error/change our minds, right? ;))
Will there be an option that if we block a user his stuff won’t come up in our queue? – it would only be fair.

Yes, there will be an unblock feature.

Your stuff may still appear in the blocked users queue. Yet his stuff won’t show in yours.

Personally, I’d rather be able to keep my work out of a user’s queue. Say you get a lot of reviews from someone who gives long, unhelpful reviews. We can’t prevent that? That’s what I thought it would mean to “block” them. If I don’t want their stuff in my queue, I can just skip it.

Actually, I had that backwards. Your stuff WON’T appear in their queue. But their stuff may still appear in yours (unless they block you too).

Hehe, so we will actually have to send a PM to that blocked user if we want to get rid of him: ‘Ehm… hi! I don’t like you and I hope you don’t like me, would you mind blocking me? Thanx!’

Yeah, I went ahead and made it both ways. If you block someone then you won’t see their stuff, they won’t see yours.

I just blocked a person. :)
Is this feature working now or is it still being tested?
It looks nice and convenient!

Yes, this feature is fully functional.