FACEBOOK TRACKING

NOW FACEBOOK CAN TRACK U WHATEVER U DO ONLINE EVEN AFTER U R OFFLINE

An Aussie technologist had told that facebook can track u even after u were logged out.
this can be done while u r loged in u visit different pages they(fb) can keep track by maintaining cookie, Sites delete them when loged out as the browser sends some personnel info about user's visit, keep track of by maintaing token's.