I think it was either Robert Scoble or Jeff Jarvis who said that because of privacy issues that Facebook had last year with their confusing settings and making

I think it was either Robert Scoble or Jeff Jarvis who said that because of privacy issues that Facebook had last year with their confusing settings and making almost everything public by default (posts, pictures, etc), many people started making their profiles as private as possible. So in trying to force people to make everything public by default, everyone started to make private even what they wanted to be public initially. My guess is the auto-sharing and timeline thing will backfire in a similar way, and people will want to avoid them as much as possible. I don't think privacy is going to die in the same way Zuckerberg thinks it will. If anything, people are just now starting to realize about all these privacy issues online, and are starting to do something about them.