New York - The Zagat Survey, a publisher of local guides on restaurants, hotels and nightlife, on Monday debuted Zagat.mobi, an ad-supported mobile version of its books that covers all major U.S. cities, London and other international destinations. The free version includes details such as addresses, phone numbers and hours of operation for listed businesses; only Zagat.com subscribers will be able to view the Zagat ratings and reviews of listed businesses free of charge.