Club Penguin has updated the Membership page today. It is a “Buy One Gift One” offer, which you can purchase a 1 month membership and get a bonus month as a gift to give it to someone you know or your friends. But hurry, it is Limited Time until December 11, 2013:
Also the Club Penguin bonus membership gift code expires on December 31, 2013. But hurry, it all ends on December 11, 2013. You better hurry and buy it because it is Limited Time only!.