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.
Fair enough. I'm a user who isn't even all that concerned about privacy, but it's still not a pleasant feeling to have Facebook continually rearrange what they have decided to do with my information at their every whim.
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.)