Gah! I've got 3 grey's in my friends list! I know one isn't coming back...I'm not so sure about the other two. Whoshouldibe has been gone for a while now. 
marginwalker2002:
I know the feeling. I have 5 greys in my list. I know a couple will not return, but one of them added me as a friend the day he went grey! WTF??