OfficeTalk lets you document any conversations that you have with contacts or companies. A Conversation is either an incoming or outgoing telephone call or a face to face conversation. Once recorded, a conversation will be kept as a history item against the related company or contact and may be viewed in the history tab in Company or Contact View or from within History View.
More:
Reading Existing Conversations
Editing Existing Conversations
Adding to a Conversation Thread
Following a Conversation Thread
Specifying Access Rights to your Conversations