Methods and systems for an interoperable message service allow users of a community-based platform to send an instant message to another user through any one of multiple message service platforms, and to allow the user to access and utilize the interoperable message service from a standard networked...http://www.google.com.hk/patents/US20080052363?utm_source=gb-gplus-share專利 US20080052363 - SYSTEMS AND METHODS FOR INTEROPERABLE MESSAGE SERVICE WITH MOBILE SUPPORT IN A MOBILE COMMUNITY PLATFORM