All privacy offers on FB are take-it-or-leave-it: you give up all your privacy to play Angry Birds, or you don't play Angry Birds. There's no 'give up some of your privacy to play Angry Birds' offer, or 'here's a game that's 95% as fun as Angry Birds but requires that you only yield up the most trivial facts of your life to play it' that we can test the market against.
Charkham's five examples from the visual interface design are very good evidence that FB isn't a harbinger of the death of privacy; rather, it's a tribute to the power of deceptive hard-sell tactics to get people to make privacy trade-offs they wouldn't make in a fair deal.
#3: The Tiny Hidden Info Symbol Trick
In the old Design Facebook presented a detailed explanation about the “basic” information you’re about to expose to the apps you’re adding. In the new design they decided to hide that info. If you pay careful attention you’ll see a tiny little “?” symbol and if you hover over it you’ll discover that this app is about to gain access to your name, profile pic, Facebook user ID, gender, networks, list of friends and any piece of info you’ve made public on Facebook. Quite a lot of info for a 20×10 pixel tiny hidden info symbol don’t you think?!
Of course, the interface is only a small part of the tactics used to manipulate privacy decisions on FB. More insidious and likely more effective is the use of the proprietary algorithms to apply intermittent social reward for disclosure, driving users to greater and greater disclosures -- something well documented in The Filter Bubble, Eli Pariser's 2011 book on the subject.