A pulled pork taco hovered about four inches from my mouth when my phone impolitely interrupted me. “Hey, I see you’re having people over. O.K. if I stop by?” read a text message from someone whom I had not invited to my place for a dinner party.

How did the person know I was even having a party? I needed only to glance at my guests, who were sharing messages and photos of the dinner to their online social networks.

Call it the latest episode of “Nothing’s Private Anymore.”

The answer, of course, is “no.”

(Source: The New York Times)