San Francisco, CA - The software-driven real estate company Zillow has announced it's throwing in the towel on its "iBuying" program. The iBuying, or instant buying, service also known as Zillow Offers had recently been bogged down by a backlog of renovations and closings caused by labor and supply shortages in the U.S. housing market. Zillow disclosed Tuesday that it lost about $304 million in the third quarter alon