Zillow (NASDAQ: Z) is an online real estate database that was founded in 2005 by Rich Barton and Lloyd Frink, former Microsoft executives and founders of Microsoft spin-off Expedia. The website uses a proprietary algorithm called the "Zestimate" to appraise property values based on undisclosed factors. Sellers can use Zillow as a marketing tool by appraising their properties, posting property information such as improvements and access to major roads; and comparing nearby property value appraisals. Buyers can freely access and track such information online. The website currently tracks 100 million valuations throughout the United States. Zillow was ranked in the top 300 U.S. sites in terms of traffic by Alexa
nice large scale web product, just went public, high bar, smart folks.
