I went through and took the quiz and then read the follow-up comments of each response. Then I went back and tried each answer, reading the corresponding feedback that follows the answer, whether right or wrong. Since I needed a non-threatening, non-punitive way to teach netiquette to a group of college freshmen who would be actively involved in email communication with their peers, I tried the quiz with a group of twenty students.
I found that the students were surprised at some of the responses to their answers, which indicated they really needed the awareness the quiz gave them. They weren't as threatened by the "computer's" answer and took it well when they missed something. I didn't have to be the "bad guy" or "heavy" while exposing some of them to things they were unaware of.
The quiz was very easy--and effective. With some of the first time users--there weren't many--it took a minute to get them to the site. Then they were fine.