I'll be deactivating my Facebook account (tainting what I need to) and removing as much information there as possible within the week.
I'm not a hardcore privacy advocate, but I joined Facebook with the understanding that some of what data placed there would stay private. That is what we agreed to.
Facebook has repeatedly violated that trust.
Yes, privacy is important. However, the only information that I've ever put on Facebook is information that I'd want everyone else to know. That's why I have a Facebook; to give people who don't know me an idea of who I am and what I'm like, and get a little bit of personal branding out there. For instance, there's at least one little portion of my life that I don't want to be broadcast out to everyone, so it's conspicuously missing.
I don't feel that Facebook told anyone that their data would be private. Maybe I'm just naïve, or a little bit of an exhibitionist.