A method and apparatus for facilitating online payment transactions in multiple currencies between participants of a network-based transaction facility are described. In one embodiment, a user interface is communicated to a sender via a communications network. The user interface facilitates sender input...http://www.google.com.tw/patents/US7742985?utm_source=gb-gplus-share專利 US7742985 - Multicurrency exchanges between participants of a network-based transaction facility
