Re: usps m.o. question
^^ Where do you come up with this? Maybe things have changed since your time, but i'm surprised to hear this from a postal employee because i've had the opposite experience with all my payments online sales/purchases. I buy/sell enough stuff each year that the amount probably adds up to the value of a nice automobile.
The whole point of USPS MO is that it protects both parties. It's certified funds for the seller, so they don't get snookered... and it's a hedge for the buyer, because if a seller cashes one and doesn't deliver the item he's just committed mail fraud (a felony federal offense, btw).
Last time I had to do it, the time limit was 2 weeks after issue to file a claim against a money order, and $5 PLUS an additional 2-ish weeks of waiting for their "investigation" to conclude before reimbursement. YMMV, I know my postal clerks pretty well since I ship things several times a week.
The serial # list is updated daily IIRC, especially since there was a recent batch of fraudulent MO's in circulation. I know that they ALWAYS check them here, i've never had one questioned though.
I've yet to be hosed on a USPS MO, they are the only physical payment I accept (except cash FTF), for the same reason I only take one type of electronic payment (PayPal, because they have done good to protect me from some shady e-bay folk).
The only hassle i've run into with an MO is being stuck holding the bag for a while until they replace it on a "lost/destroyed" claim. That and having them in large amounts that they can't cash out of their registers, so I have to take 'em to the bank.
I've had stuff lost, but in the end I still like USPS more than big brown. Their is a reason their trucks are the color of dogshit. Only a company with that as their standard could scan a 6-month old, half-torn, completely blacked-out label (partially covered by the new one I might add) in order to send my own box to me from across town... and it still took them a week. Of course Fed-ex ran over my plasma cutter with a forklift, so...