Two examples as to why people say it's hard to control access to your content of the top of my heard are a) by default applications that your friends install c

Two examples as to why people say it's hard to control access to your content of the top of my heard are a) by default applications that your friends install can access your content. b) Facebook has several times changed their privacy defaults without informing the users, causing reams of older content to be visable to "friends of friends" as opposed to just friends. Unless you check the privacy and application settings approximately every three months then it's easy to get burned when a site upgrade gets rolled out and the "recommended" settings are applied to your account.