When I buy money orders at USPS, am I
forced to use PIN based transaction,
or can I also use signature based
transaction.

I did do a search on the flyertalk and
read all the relevant posts. Still not clear
to me:-). I called a post office and
the guy didnt seem to know that much.

Citibank Advantage card gives 1:1 for
a 65$ annual fee debit card, but that
works only for signature based purchases.

If USPS accepts signature based cards,
citibank Advantage card seems like
the best debit card to have.

Since most of you have BOFA debit card,
I think I am missing something?