. . . which is something that even Libertarians need to admit.
Grocery stores data-mine their courtesy cards, insurance companies want access to your health records, and of course there are the ever-present credit bureaus.
Now there's The Work Number, an emerging database for potential employers (and eventually others, like your friends from the government or simply interested corporations) to verify your salary, how long you've been at your current job, and how many paper clips you walk out with in your attache case. . . .
When it comes to privacy, you have very few advocates left.