The article mentions that non-English language support as a future improvement. Since the article is long that it's easy to miss this point and to put that in perspective how important that is here's an example:

  yehtohaasanhaiguesskarna

That means "This is easy to guess" in Hindi transliteration. Only English support would say it will take "centuries" to guess. (http://dl.dropbox.com/u/209/zxcvbn/test/index.html)