NYC & Company, the official marketing, tourism and partnership organization for the City of New York, has announced that all 20 hotels in The Signature Collection, a group of the city's luxury hotels, will participate in The Signature Collection Third Night promotion this winter. The program gives visitors a complimentary third night after they book and pay for two consecutive nights between Jan. 2 and Feb. 29, 2012. In addition, NYC & Company also announced that, for the first time ever, Third Night customers will receive a special Key to Madison Avenue card, providing access to special...