The Zagat Survey /zəˈɡæt/ or zə-GAT was established by Tim and Nina Zagat in 1979 as a way to collect and correlate the ratings of restaurants by diners; for their first guide, covering New York City, the Zagats surveyed their friends. At its height, ca. 2005, the Zagat Survey included 70 cities, with reviews based on the input of 250,000 individuals with the guides reporting on and rating restaurants, hotels, nightlife, shopping, zoos, music, movies, theaters, golf courses, and airlines. The guides are sold in book form, and were formerly only available as a paid subscription on the Zagat website. As part of its $125 million acquisition by Google in September 2011, Zagat's offering of reviews and ratings became a part of Google's Geo and Commerce group, eventually to be tightly integrated