Promoting the sale of goods and services by providing electronic coupons, promotions, offers, content, vouchers, and/or rebates for the goods or services; promoting the sale of goods and services by providing online coupons, promotions, offers, content, vouchers, and/or rebates for the goods or services delivered to a user's wireless device; promoting the sale of goods and services by redeeming electronic or online coupons, promotions, offers, content, vouchers, and/or rebates for the goods or services with a wireless device at a point of sale terminal; promoting the sale of goods and services by providing online coupons, promotions, offers, content, vouchers, and/or rebates for the goods or services via digital signs