Alliance Data Systems Corporation ADS -0.32% , a leading global provider of data-driven marketing and loyalty solutions, today announced its Retail Services business, which manages more than 130 private label and co-brand credit programs, has signed a long-term agreement to provide private label credit card services for high-growth online discount retailer Overstock.com (www.overstock.com ) (NASDAQ: OSTK). Based in Salt Lake City, Overstock.com sells a broad range of products from apparel to home....