From Porch to Patio, a 1975 piece by Richard Thomas, discusses the transition in American society from the semi-public gathering place in front of a house to the private space in the back.
When a family member was on the porch it was possible to invite the passerby to stop and come onto the porch for extended conversation. The person on the porch was very much in control of this interaction, as the porch was seen as an extension of the living quarters of the family. Often, a hedge or fence separated the porch from the street or board sidewalk, providing a physical barrier for privacy, yet low enough to permit conversation.
When people started moving out to new buildings in the suburbs, the patio emerged to provide the privacy for these urban refugees.
The patio was an extension of the house, but far less public than the porch. It was easy to greet a stranger from the porch but exceedingly difficult to do so from the backyard patio. While the porch was designed in an era of slow movement, the patio is part of a world which places a premium on speed and ease of access. The father of a nineteenth-century family might stop on the porch on his way into the house, but the suburban man wishes to enter the house as rapidly as possible to accept the shelter that the house provides from the mass of people he may deal with all day.
(via front porch republic)
In an anonymity experiment, Catherine Price attempts to recover some of her privacy by living off the information grid.
Pay for everything in cash. Don't use my regular cellphone, landline or e-mail account. Use an anonymizing service to mask my Web surfing. Stay away from government buildings and airports (too many surveillance cameras), and wear a hat and sunglasses to foil cameras I can't avoid. Don't use automatic toll lanes.
For the bit about the cellphone, I'm surprised that she didn't slip it into an antistatic or other foil-lined bag while it wasn't in use.
In the 1970s, Japanese photograhper Kohei Yoshiyuki stumbled upon a couple in a park engaged in sexual activity in the darkness and, somewhat more curiously, two men creeping towards the couple, watching them. Over many months, he followed these voyeurs in the park, befriended them, and outfitted his camera with an infrared flash so as to blend into the crowded darkness. The result is a fantastic series of photos called The Park. As you can see in the photo below, Yoshiyuki even caught some of the peeping toms touching their "visual prey".

Yoshiyuki's photographs explore the boundaries of privacy, an increasingly rare commodity. Ironically, we may reluctantly accommodate ourselves to being watched at the A.T.M., the airport, in stores, but our appetite for observing people in extremely personal circumstances doesn't seem to wane.
The NY Times has an audio slideshow of some images from The Park, which is on display at the Yossi Milo gallery in NYC until October 20 (more photos). A book of Yoshiyuki's photography is available at Amazon.
The Times article mentions several photographers whose work is similar to Yoshiyuki's. Merry Alpern took photographs through a window of prostitutes plying their trade with Wall Street businessmen. Weegee used an infrared flash to capture kissing couples at the movie theater (although it seems that particular shot was staged) and on the beach at Coney Island (last photo here). Walker Evans photographed people on the subway without their knowledge.
William Gibson speaking on secrecy:
It is becoming unprecedentedly difficult for anyone, anyone at all, to keep a secret. In the age of the leak and the blog, of evidence extraction and link discovery, truths will either out or be outed, later if not sooner. This is something I would bring to the attention of every diplomat, politician and corporate leader: the future, eventually, will find you out. The future, wielding unimaginable tools of transparency, will have its way with you. In the end, you will be seen to have done that which you did.
Taken from Alex Steffen's talk at PopTech.
I was wondering much the same thing as Michael re: iTunes phoning home with your listening history. Isn't that what we want? Our software watching and making recommendations for us...isn't that helpful? Providing better, more targetted advertising (if we have to have advertising, it should be useful)? There are privacy concerns and companies should be clearer about what's going on, but I don't mind if the software I use is a little smarter.
Stephanie Hendrick has tracked down the identity of an anonymous blogger (she matched them to a non-anonymous blog) using linguistic identity markers. See also secret sites. (via j/t)
Friendster has a new feature...you can tell who has looked at your profile (feature is on by default and you can turn it off...if you're even aware of it in the first place). If I still used Friendster (not that I ever really did), I'm not sure how I would feel about this. On the one hand, you can tell if someone's interested in you (that guy you just met at the bar found your page as soon as he got home), but on the other hand, you might not want the girl you have a crush on to know you're obsessively reloading her page to check for updates. (Also, imagine if they added this to LiveJournal...)
A citizen's guide to refusing NYC subway searches. "As innocent citizens become increasingly accustomed to being searched by the police, politicians and police agencies are empowered to further expand the number of places where all are considered guilty until proven innocent."
FAQ: How Real ID will affect you. So nice that they snuck it in on a completely unrelated bill like that...I don't remember that aspect of gov't being explained in that Schoolhouse Rock song about the bill.
Bruce Schneier on how to mitigate identity theft. "If we're ever going to manage the risks and effects of electronic impersonation, we must concentrate on preventing and detecting fraudulent transactions."