Muad'Dave writes: Here's an interesting article at The Atlantic about the prevalence of surveillance and the recent uptick in 'deja-vu' moments where devices seemingly hear your conversations and then attempt to market to you. From the article: "One night the previous summer, I’d driven to meet a friend at an art gallery in Hollywood, my first visit to a gallery in years. The next morning, in my inbox, several spam e-mails urged me to invest in art. That was an easy one to figure out: I’d typed the name of the gallery into Google Maps. Another simple one to trace was the stream of invitations to drug and alcohol rehab centers that I’d been getting ever since I’d consulted an online calendar of Los Angeles–area Alcoholics Anonymous meetings. Since membership in AA is supposed to be confidential, these emails irked me. Their presumptuous, heart-to-heart tone bugged me too. Was I tired of my misery and hopelessness? Hadn’t I caused my loved ones enough pain? Some of these disconcerting prompts were harder to explain. For example, the appearance on my Facebook page, under the heading “People You May Know,” of a California musician whom I’d bumped into six or seven times at AA meetings in a private home. In accordance with AA custom, he had never told me his last name nor inquired about mine. And as far as I knew, we had just one friend in common, a notably solitary older novelist who avoided computers altogether. I did some research in an online technology forum and learned that by entering my number into his smartphone’s address book (compiling phone lists to use in times of trouble is an AA ritual), the musician had probably triggered the program that placed his full name and photo on my page."