That might not sound like a big deal until one considers an example: "First, we can immediately find his political orientation based on his strong opinions about Power and Terror: Noam Chomsky in Our Times and Fahrenheit 9/11. Strong guesses about his religious views can be made based on his ratings on Jesus of Nazareth and The Gospel of John. He did not like Super Size Me at all; perhaps this implies something about his physical size? Both items that we found with predominantly gay themes, Bent and Queer as folk were rated one star out of five. He is a cultish follower of Mystery Science Theater 3000. This is far from all we found about this one person, but having made our point, we will spare the reader further lurid details."…Back in 2000, a Carnegie Mellon researcher took a look at 1990 US census data and concluded that 87 percent of all Americans could be uniquely identified based on only three items: ZIP code, gender, and date of birth.