For those of you that have gotten USPS tracking information, let me be the first to tell you that you will have the equipment in your hand before they update their website. The post office sucks when it comes to tracking packages online.
Yeah, the USPS system is a little slow at times, but just so everyone is aware, their system is not "tracking", it's actually just called DELIVERY Confirmation, so unless you drop the package at the counter of a post office, it won't get scanned until it is actually delivered, and only provided the carrier doesn't forget. I have yet to ever have a carrier forget to scan one though. It will usually only show that it's been "delivered" sometime between 2 and 24 hours AFTER the delivery, once the carriers handheld is returned to the station.
I almost always drop my stuff at the post office, or request the carrier scan it as received, so at least there is proof it has been shipped (once it shows up in the system).
My problem is only in not getting ANYTHING from the seller. The least he could have done was, as promised, provided me the tracking information.