I work for Facebook and am naturally biased, but even in my cap as a longtime HN reader, I was disappointed at the difference between the reception to http://news.ycombinator.com/item?id=1339248 versus the other Facebook-related posts here.
It's sort of like dating someone who all the sudden decides to start calling you at work throughout the day. Just a bit unnerving.
Facebook ends up feeling dictatorial and paternal. And that's aside from whether the privacy concerns are valid (which at least some appear to be.)