Abstract: A system for conducting chat sessions on a screen, the system comprising apparatus for displaying, on a screen, a plurality of stationary avatars respectively representing a plurality of chat participants over time; and apparatus for displaying, on the screen, a temporal sequence of chat events including a processor operative to utilize stored metadata characterizing each event's position in the temporal sequence and each event's logical association with a respective one of the plurality of avatars to generate a visual representation of the temporal sequence in which both of the following are visually represented simultaneously: each event's position in the temporal sequence; and at least one logical association between each event and a respective one of the plurality of avatars.