> "But this aspect isn't basically the issue of publishing? If you post your Facebook status/photos and mark them publicly visible, you're a publisher."
Sure, that's part of it. However, the issue is that Facebook have tried to increase what constitutes public Facebook content over time.
I'm sure I could find other privacy issues with Facebook. Can you opt-out of all of this? Probably, but it certainly requires vigilance by its users, especially when new features are rolled out.