Preferred embodiments of the subject invention overcome the limitations of known trading interest dissemination and execution systems by (1) enabling market participants to limit dissemination of trading interests to only those other market participants likely to have a significant contra-interest, (2)...http://www.google.com.tw/patents/US7356500?utm_source=gb-gplus-share專利 US7356500 - Method for directing and executing certified trading interests