To support international users, you should ideally have special sites in various languages. If you can't produce such localized sites, you should at least conduct user testing in each of your important target countries to ensure that your main site is fairly easy for your foreign customers to use. The guidelines have always stated as much, but if your company is typical, I know you won't comply.

Even though many companies do half their business overseas, experience shows that few companies are willing to pay the high cost of testing in multiple countries. We're lucky if a company invests in domestic testing; let's not push our luck too far.

Here instead are the minimum requirements for ensuring that international users can use your site. Just remember: To fully maximize your business potential in other countries, you should do much more.