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Business Description Zillow is the leading real estate information marketplace. We provide vital information about homes, real estate listings and mortgages through our website and mobile applications, enabling homeowners, buyers, sellers and renters to connect with real estate and mortgage professionals best suited to meet their needs. We are transforming the way people make home-related decisions. Zillow provides consumers and real estate professionals an “edge in real estate”. We maintain an unwavering commitment to giving consumers free access to as much useful information as possible. Our living database of more than 100 million U.S. homes – including homes for sale, homes for rent and homes not currently on the market – attracts an active and vibrant community of users. Individuals and businesses that use Zillow have updated information on more than 28 million homes and added more than 60 million home photos, creating exclusive home profiles available nowhere else. These profiles include rich, detailed information about homes, such as property facts, listing information and purchase and sale data. We provide this information to our users where, when and how they want it, both through our website and through our industry-leading mobile applications that allow consumers to access our information when they are curbside, viewing homes. Using complex, proprietary automated valuation models, we provide current home value estimates, or Zestimates, on nearly 100 million U.S. homes, and current rental price estimates, or Rent Zestimates, on nearly 100 million U.S. homes. Our products and services present residential real estate data in novel ways that have revolutionized the way consumers search for, find and understand home-related information and make real estate decisions. Consumers increasingly are turning to the Internet and mobile devices for real estate information. During May 2011, 22.0 million unique users visited our website and mobile applications, representing year-over-year growth of 102%. We operate the most popular mobile real estate applications across iPhone, iPad, Android and BlackBerry. During May 2011, Zillow was used on a mobile device more than 8.8 million times, with more than 1.7 million homes viewed on mobile devices each day. Real estate and mortgage professionals are a critical part of the home-related marketplace. We enable consumers to connect with real estate and mortgage professionals best suited to meet their needs. Our real estate marketplace benefits from network effects. As more consumers come to our website to use our products and services, more real estate and mortgage professionals contribute content to distinguish themselves, thereby making our marketplace more useful and attracting additional consumers. We generate revenues from local real estate professionals, primarily on an individual subscription basis, and from mortgage professionals and brand advertisers. During the three months ended March 31, 2011, we generated revenue of $11.3 million, as compared to $5.3 million in the three months ended March 31, 2010, an increase of 111%. For the years ended December 31, 2008, 2009 and 2010, we generated revenues of $10.6 million, $17.5 million and $30.5 million, representing year-over-year growth of 49%, 65% and 74%, respectively. ------ Zillow, Inc. was incorporated in Washington in December 2004. Our principal executive offices are located at 999 Third Avenue, Suite 4600, Seattle, Washington 98104, and our telephone number is (206) 470-7000. Our website address is www.zillow.com.