I've wondered many times who has rated me or even if someone has. I'd like to propose that when someone is rated, they can opt to get an email like subscribing to a thread. (Maybe this is able to be done already, but I can't find it.)
That functionality isn't currently available on NetPro. The issue I see with a feature like that is someone might use it maliciously. If one member gives another member an average rating they may take offense to it, and then start negatively rating that member for no reason. I would love to be completely transparent with ratings, but I fear a feature like this could start a ratings war.