9 Downloadable computer software for facilitating electronic commerce transactions; downloadable computer software for use in shopping for retail goods; downloadable computer software featuring offers, deals, coupons, rebates, rewards, vouchers, price tracking, price notifications, price-comparison information, links to the retail websites of others, promotional materials, and discount information; downloadable mobile application software for facilitating electronic commerce transactions; downloadable mobile application software for use in shopping for retail goods; downloadable mobile application software featuring offers, deals, coupons, rebates, rewards, vouchers, price tracking, price notifications, price-comparison information, links to the retail websites of others, promotional materials, and discount information