1. A method implemented in an application executing on a computing device associated with a user, the method facilitating multiple simultaneous instant messaging conversations, the method comprising: receiving a first online instant message from a first instant messaging conversation, the user a participant in the first instant messaging conversation; receiving a second online instant message from a second instant messaging conversation, the user a participant in the second instant messaging conversation; receiving a third online instant message; integrating the first online instant message and the second online instant message and the third online instant message into a first sequence of instant messages; integrating outgoing instant messages into the first sequence of instant messages, so that the first sequence of instant messages are displayed in full-duplex; displaying the first sequence of instant messages in a first application on a display associated with the computing device, the displaying such that more recently received instant messages are displayed one of below and above less recently received instant messages, in the plane of the display and wherein the displaying is such that each of the first online instant message, the second online instant message, the third online instant message and outgoing instant messages are visible and wherein the displaying is such that the displayed first sequence of instant messages is scrollable by the user; and responsive to a mouse click directed at the displayed first sequence of instant messages and without requiring further user input, sending a signal from the first application to open a second application, wherein the first application is different from the second application, and displaying a second sequence of instant messages in the second application on the display, the second sequence of instant messages primarily comprising plural instant messages, including the outgoing instant messages from the first instant messaging conversation and wherein the displaying of the second sequence of instant messages is such that more recently received instant messages are displayed one of below and above less recently received instant messages, in the plane of the display and wherein the displaying of the second sequence of instant messages in the second window is such that the displayed first sequence of instant messages in the first application is also visible.