Surprised this has not been posted yet - I took part last year (didn't win, hopefully this year) however it's so easy.. just open the door each day....
(from the site)
Every day in December until Christmas well be giving away a fantastic prize to AVReview members courtesy of those awfully nice people at Armour Home.
The prizes start small, but therell be some big surprises - including a Tivoli Music System Platinum worth £800 and a fantastic Myryad Mi All In One System worth £1,250. So make sure you come back each day to try your luck.
All you have to do for your chance to win is click on each dated window. But no peeking, the calendar wont open until each day arrives. Good luck!