I just found this while rating. If you click on the SEE ALL on the right hand side where all your alerts are. You will find a list of all the stash people have uploaded. When you have rated their stash Starting from the bottom up, it goes away so you know who else needs to be rated. I think this is one heck of a good feature and will help us all not to forget who needs to still be rated. WTG BABY J ^5
NOTE:
One thing I have noticed is it doesnt seem to go away if you start from the top or middle. I've seen it go away when I rate from the bottom down. So those of you on my list who have added stash...I'm working on getting to your stash A.S.A.P.