Ever wonder how Overstock (OSTK) fills its online orders? Overstock's CEO Patrick Byrne gives TheStreet's Rhonda Schaffler a tour of the company's nearly 700,000 square foot complex in Salt Lake City, Utah. The facility is Overstock's biggest distribution center in the country and also houses customer service operations and an art department, where items are photographed for the Overstock.com website. Byrne showed off an area called the mezzanine, where row after row of merchandise is held before workers pick up the goods for shipping. 'Unlike Amazon(AMZN), you can't really automate our picking because goods come in, and in the Overstock business goods are not perpetual. They come in, they roll over constantly,' said Byrne. TheStreet's Rhonda Schaffler reports from Salt Lake City, Utah.