"If someone's search history contains <insert comically-named skin flick here> then it would nice if that wasn't considered embarrassing so much as private and even more so if it wasn't considered perverted so much as normal."
Remember that the very concept of personal privacy is a relatively new thing: probably no older than about a century and a half for the ordinary joe. Basically, the smaller the community or the larger the reach of its people, the less one's privacy can be guaranteed. Privacy increased with the rise of cities that created a screen of other people and such, but with the increase of electronic communications, particularly those of an audio-visual nature, that privacy has dropped drastically. We're rapidly becoming the Global Village, and I don't mean that in a good way.
Biting the hand that feeds IT
