I usually give up on these surveys very quickly as they're either poorly worded or too vague for me to be bothered thinking about.
This on the other hand was nearly all well constructed so, done!
When i started as a teacher there was shed loads of warnings about facebook privacy. They even ran a group session to teach people how to make sure their profile is secure. Apparently before it became such a big issue several members of staff at the school 'laid everything bare' as it were, with horrible repercussions.