A sneaky way to invade privacy: These folks will create a fake "quiz" and send it to your target, who, if s/he is typical of two thirds of Internet users, will fill it out. The results are forwarded on to you.
1. Name
2. Gender
3. Birthdate
4. Are you easily excited?
5. Do you have a girlfriend or boyfriend?
6. If so, what's their name
7. Biggest crush
8. First crush
9. Ever had sex?
10. Watch porn?
11. How often do you masturbate?
12. Attracted to someone of the same-sex?
13. Biggest turn-on
14. Favorite sex-toy
15. Recurring dream
(Thanks, Rich!)