Method and apparatus for applying reputation scoring to participants in a group chat session in a computer network. The group chat session is displayed in the form of a visually perceptible conversation arranged as a sequence of communications by a group of users of network accessible devices. Each user has an associated reputation score generated responsive to at least one characteristic of a previous communication by the associated user. Each network accessible device displays each communication using a visual indicia selected in relation to a magnitude of the associated reputation score for the user who generated the communication. The visible indica can take a variety of forms such as different sizes of comments, different color schemes, different fonts, and so on.