What about the seemingly mundane question of what icon to use to represent the concept of “language” in your UI?
This is no trivial point. If your visitor reads only Japanese, the word “lang” will mean nothing to her, and so all your efforts to translate your page will be lost. Flags don’t cut it for various reasons. You’d think that in this village of ours, we’d have a universally understood icon for this purpose. The folks at http://languageicons.omcomc.com
have done exactly that.