Does not play well with Gift Credit Cards
I got a "gift" Amex and wanted to just load the total amount onto my account, but whenever I try, Amazon first does a $0.10 test authorization that does not clear off for over a week, and this prevents me from using the full value of my Amex.  If I want to lose the dime, I can load all but that ten cents, but then I have a "lost" ten cents that I can't really use.  If I wait for the ten cent auth to clear and try again, Amazon does another one when I re-try!
Rating: 2 stars