A voluntary questionairre is one thing, but...
...what's up with this:
To watch the video, a person has to go to an Internet site and punch in an ID code that tells the party who is viewing it.
What's the point of making the info personally identifiable? Especially since it's such an imperfect set-up: I give the CD to my sister, she uses my ID code to view the video, and suddenly I'm in someone's database, for whatever ultimate reason. It could be for fairly innocuous--though still invasive--maketing reasons, but I suppose it could also be for something else.