@AJT:
Where are you guys going to track your package? I tried my shipment number on USPS website and nothing comes up, and this is only my second time using rightstuf. Normally, I use Amazon which the tracking is on the Amazon website. Nothing on my order page says anything about tracking. I tried searching the site but couldn't find anything.
In the email rightstuf sends you, if you click on the shipping number (the long one towards the bottom) , it should link you to your shipment on the USPS site. If you're typing it in the USPS website directly, make sure you're using the delivery confirmation number and not the order shipping conformation number.