Do you know Facebook can track you easily when you visit other sites?

World's most famous social networking site, Facebook has confessed tracking which sites its users visit even after they log out. According to the 'USA Today' report, social networking site used a tracking cookie technologies similar to the controversial systems used by Google, Adobe, Microsoft, Yahoo and others in the online advertising industry to track their users visited sites.

Now you can know how Facebook's tracking cookie works: Every time one logs onto Facebook it inserts a "session cookie" and a "browser cookie" into one's browser. If one simply visits the site without signing up on the browser, cookie is inserted. From that point on, each time one visits a site which uses Facebook technology, the cookie works in conjunction with the plug-in to alert Facebook to the date, time and URL of the page you are viewing.

The tracking technology also tracks IP address, screen resolution, operating system and browser version, are also recorded by the social networking site, the report said.

Facebook spokesman Andrew Noyes said that the company's tracking systems are used to personalise content and help boost security, adding the tracking practices are spelt out in its 'Privacy Policy' and 'Help Center' web pages.