Where real estate estimates on the Zillow website were opinions and, therefore, not actionable under Illinois Uniform Deceptive Trade Practices Act.The 7th U.S. Circuit Court of Appeals affirmed a decision by U.S. District Judge Amy J. St. Eve.A Zestimate is an estimated value for real estate, available on the Zillow website. Zillow generates Zestimates by applying a proprietary algorithm to public data, such as a building’s location, tax assessment, number of rooms and the recent selling prices for nearby parcels …