[BenjiWiebe]

Well I administer an ecommerce site, and for the checkout page I block everything besides Canada and USA.

Because those are the only two countries that we've ever in the life of our business, had a legitimate order from.

It prevents the majority of credit card testing, but it is tempting to apply it to the whole site to reduce traffic and server load.

[dotancohen]

Is be seriously pissed off if I invested the time to build a shopping cart and got to the order screen just to be turned away. I hope that you have a clear message somewhere that you do not ship outside the US and Canada.

[BenjiWiebe]

Yes it only allows US as the shipping address, and only US/Canada as billing address. The only reason we even allow Canada billing is because some of my relatives (Canadian) will order it and have it shipped to a parcel service on the US side of the border.