The Most Useless Electronic Program

i have been buying and selling here for a while now. everything i have sent out has been USPS because the shipping charges are very reasonable. i have never had a problem, yes it may take a little longer, but it does get there. every package that has been sent to me USPS has been hand delivered to me by my mailman, including big packages like intake manifolds. the 22 digit number is merely a confirmation number that tells you it was , in fact , delivered to that address and they scan the number right there in front of you to confirm delivery, i have never tried to punch in the number while the package was in transit so i dont know if it can actually be "tracked". they charged 18 bucks to send an intake manifold across the country, i feel that was a good deal. so far ive never had an issue.