Hmmm.

I just checked on an item I got on E-bay yesterday. E-bay has stated that their global shipping (hack, spit) won't be affected, so I went with someone who uses it, gritting my teeth and paying their extortion.

I now have both a global shipping tracking number and a USPS tracking number. Uhhhh...? On the plus side, not only has it been accepted by USPS (apparently), it is actually moving through the system as usual.