review notifications used to show up on my host dash board until I left a review. Now they don't, so I'm not sure who I have left a review for or not. Is this located somewhere else now?
I find them now by clicking on "Host" and then on "Reviews". The "Reviews by you" line will then show how many are outstanding by showing the number like (2).
You can click on "Reviews by you" and guests who you haven't reviewed yet will have a "Write a review" link associated with their profile photo.