Interesting revelations invariably emerge when a high-profile entity is scrutinised, intensely and unforgivingly, by those who are convinced it's too good to be true. Case in point: Julia Gillard. The NBN. Miley Cyrus. And Facebook, of course, which this week was pulled into yet another privacy scandal that should surprise absolutely nobody – and offer yet another reason why CSOs should be very, very careful when it comes to use of social media within their company's four walls.