I'm surprised to see that "correct horse battery staple" type pass-phrases really have to be quite long to score well, but that even comically short email addresses ("dlk3@mit.edu") score very highly. In fact, it looks like my ever-so-clever words-and-numbers web passwords ("Happy314Day") are all terrible, but all my email addresses all make maximum strength 4-point passwords.

I wonder if that's because email addresses are really hard to crack or if it's because the rules of this scoring system weren't designed to account for such a practice. Not a practice of using your real email address as a password, but the practice of using a fictional email address as a password.