Just thought I would throw this out there about USPS Tracking.
If you are shipping through USPS, and use your tacking number, remember this, USPS does not update there tracking info everyday. If you shipping First Class, theres almost no change till the package arrives. Ship Prioity Mail, your tracking info will mostly read "Elecronic Info Recived". This will not update till the package arrives. If your shipping through Parcale Post, since this is the slowest shipping method, you tracking info will update everyother day. Once package arrives, then info will update later.
So all-in-all, USPS is slow on updating there tracking info. Please remember this when you ship through USPS.
I have found this out myself when shipping through USPS.