Previously conducted conversations in real-time collaboration messages are persistently stored, either by client or a server, and then are associated with conversational items presented to a user (e.g. contact names, topics, etc.). An icon is provided near each listed item, which when selected, displays...http://www.google.com/patents/US8001126?utm_source=gb-gplus-sharePatent US8001126 - Conversation persistence in real-time collaboration system
