If you thought you were left alone with regard to your snail mail, this article from the NYT tells us to think again:

Leslie James Pickering noticed something odd in his mail last September: A handwritten card, apparently delivered by mistake, with instructions for postal workers to pay special attention to the letters and packages sent to his home.

“Show all mail to supv” — supervisor — “for copying prior to going out on the street,” read the card. It included Mr. Pickering’s name, address and the type of mail that needed to be monitored. The word “confidential” was highlighted in green.

“It was a bit of a shock to see it,” said Mr. Pickering, who owns a small bookstore in Buffalo. More than a decade ago, he was a spokesman for the Earth Liberation Front, a radical environmental group labeled eco-terrorists by the Federal Bureau of Investigation. Postal officials subsequently confirmed they were indeed tracking Mr. Pickering’s mail but told him nothing else.