The article deals with Group Support Systems (GSS) for presentation support in organizations. A GSS is a suite of computer software tools for focusing and structuring group deliberation, while reducing the cognitive costs of communication and information access among teams making a joint cognitive effort towards a goal. A GSS may have tools for collaborative idea generation and organization, electronic polling, simultaneous document authoring, and multicriteria decision-making, among others. Each tool creates a different kind of group dynamic. Potential effects of GSS for presentation support include increased discussion time, increased participation, more equal participation, permanent record of discussion, improved feedback to presenters, and remote and asynchronous participation. The article analyzes the impact of GSS through a survey, and concludes that the use of GSS for presentation-style meetings has become standard practice in a growing number of organizations