"Let us summarize what our algorithm achieves. Given a user's /public/ IMDb ratings, which the user posted voluntarily to reveal /some/ of his (or her; but we'll use the male pronoun without loss of generality) movie likes and dislikes, we discover /all/ ratings that he entered /privately/ into the Netflix system" (em. orig.)
One's "political orientation maybe revealed by his strong opinions about "Power and Terror: Noam Chomsky in Our Times" and "Fahrenheit 9/11," and his religious views by ratings on "Jesus of Nazareth" and "The Gospel of John." Even though one should not make inferences solely from someone's movie preferences, in many workplaces and social settings opinions about movies with predominantly gay themes such as "Bent" and "Queer as folk" (both present and rated in [one individual's] Netflix record) would be considered sensitive"
One's "political orientation maybe revealed by his strong opinions about "Power and Terror: Noam Chomsky in Our Times" and "Fahrenheit 9/11," and his religious views by ratings on "Jesus of Nazareth" and "The Gospel of John." Even though one should not make inferences solely from someone's movie preferences, in many workplaces and social settings opinions about movies with predominantly gay themes such as "Bent" and "Queer as folk" (both present and rated in [one individual's] Netflix record) would be considered sensitive"