September 26, 2011
Facebook engineer denies allegations of cookie tracking
Nik Cubrilovic, an Australian technologist had recently reported that Facebook continues to track the webpages you visit, even when you are logged out of Facebook. He also says that when the user is logged out of Facebook, the site, rather than deleting its tracking cookies, it merely modifies them, maintaining account information and other unique tokens to be used later to identify its users. So every time you access a webpage with Facebook button or widget, the browser continues sending personally identifiable information back to Facebook.