An on-line frequency award program is disclosed. A user may access the program on-line and may browse a product catalog for shopping. The user may electronically place an order, upon which the program automatically checks the user's credit and electronically issues a purchase order to the supplying company....http://www.google.com.hk/patents/US7856376?utm_source=gb-gplus-share專利 US7856376 - Internet-based frequency and award redemption system and method
