So there's a site with the main purpose of maintaining a list of contacts and everything is as openly accessible as users want. Everything but contact information. That makes no sense to me at all.
There's that completely disingenuous argument that my contacts' privacy would somehow be violated if I could export my address book. But it was me who they entrusted with their contact info. If someone shares a phone number with me, it's for me to decide what to do with it, not for the phone company or the handset maker, so why is Facebook keeping my address book hostage?