I tried to send one to my in-law's address (for them, not for me :rofl, and it said someone from this computer had already requested one. It must be tracking IP addresses.
i did a second one from a second computer and it took about eight tries before it stopped complaining i did something wrong! didn't like my city with state (??) didn't like zip (well it's "only" a year old - guess not in their database yet) didn't like on and on. finally submitted when it ran out of complaints!