Communication from Facebook recruiting team is ZERO after applying. Not even an automated reply. About a week back, I applied to Facebook after solving a puzzl

Communication from Facebook recruiting team is ZERO after applying. Not even an automated reply. About a week back, I applied to Facebook after solving a puzzle on their Interviewstreet page successfully within given time. Sadly I didn't get any kind of acknowledgement from their recruiting team, neither saying I am rejected nor that they have received my application.