I would assume most sites would notify you out of courtesy. I have heard Pittsburgh, NOLA, and Tuscon VA's have notified people of rejections (luckily not firsthand!).I've been wondering the same thing too. Does anyone know if the VA has a policy about notifying applicants that they are no longer under consideration?
I got my first two invites today. Whew - I was really sweating bullets! I was actually working on a thought record earlier today looking at the evidence for and against the prediction "I'm not going to get postdoc interviews."