Dwyieithog? Neu iaith a hanner?
One interesting aspect of the White House site is that it's now bilingual. You can read all the site text in Spanish if you prefer. But as Nielsen notes, when you switch to Spanish, all the navigation guides remain in English! Spanish speakers may enjoy the convenience, but they'll also get the nonverbal message: You don't matter enough for us to take any real trouble to make this site navigable for you.