I wouldn't say "useless." It is uploaded nightly, so there is a delay.(Vic_E55_2001 @ Jul. 25 2007,18:48) +1 on that, tracking data is useless.
I ship a lot with USPS with 99% success.
Click -n- ship is working great.
I`d use UPS or Fedex if shipping something valuable or breakable, USPS handling packages with bulldozer, I think.
Come on, "bulldozer?" We don't use anything smaller than a tank.
P.