According to Australian technologist Nik Cubrilovic: 'Logging out of Facebook is not enough.' He added, Even after you are logged out, Facebook is able to track your browser's page every time you visit a website. He wrote in his blog 'With my browser logged out of Facebook, whenever I visit any page with a Facebook like button, or share button, or any other widget, the information, including my account ID, is still being sent to Facebook.'

After explaining the cookies behavior he also suggested a way to fix the tracking problem: 'The only solution to Facebook not knowing who you are is to delete all Facebook cookies.'