I haven’t written about Facebook’s privacy policy for a long time, mainly because everybody who cares about it is already in the know, but the EFF’s timeline for Facebook’s eroding privacy policy is worth reading.
“Facebook originally earned its core base of users by offering them simple and powerful controls over their personal information. As Facebook grew larger and became more important, it could have chosen to maintain or improve those controls. Instead, it’s slowly but surely helped itself — and its advertising and business partners — to more and more of its users’ information, while limiting the users’ options to control their own information.”
You are worth money to them, and not much else (hell, they won’t even give you a Dislike button!).