If you’ve looked at real estate in the last few years, you’ve almost certainly reviewed the listings on Zillow.com and you’re probably quite familiar with the “Zestimate,” the site’s automated approximation of what the property is worth. Some realtors say Zestimates are useless and cause confusion for their customers, while Zillow defends the data. Interestingly, both sides use the same stats to argue their case. [More]