BA chapter 6

Facebook controls its privacy through a number of means. for external applications it only exposes certain information assuming the facebook user is allows it. the facebook user can associate his or her facebook account with an outside application so the application can pull information from facebook. applications running inside facebook have indirect access to more data then external applications. request for information flows through the facebook architecture allowing facebook to render some more private information internally. this allows more private information to be used without any external program having access to it. this is accomplished through a new language called FBML which is similar to HTML with new tags added in so the facebook platform can render private information.