It isn't accidental, Facebook chooses defaults that work for facebook ... not for the user. This causes people not to trust facebook, and because of that they'r

It isn't accidental, Facebook chooses defaults that work for facebook ... not for the user. This causes people not to trust facebook, and because of that they're going to find it more and more difficult to monetize user behavior on the site. They've been trying to sell users on sharing everything, but people want to share things on their own terms. Google understood (hopefully they still do) this, facebook doesn't. How can they do really great things with user data when the default attitude of their users is "I don't trust them with my data"? ... its a trick question ... they can't. There's a reason why they say "You can shear a sheep many times, but you can only skin it once". Will be fun to watch them try though.