On the one hand, this bothers me in the sense that I am, in many ways, an extremely private person. On the other hand, I'm so much of a private person that I decided facebook was a bit more than people needed to know about me and in the past two years I believe I've only used it to play Words With Friends with my family members.
That's just on a personal level, of course; the precedent it sets is extremely troubling. If this is "okay" (and apparently it is, in the eyes of the law) it makes me wonder where the line is drawn. If your employer can log into your facebook, can they change your preferences, etc.? If that information gets leaked, or "leaked," what then?
And, of course, when do they start asking for your e-mail name and password?