In Interactive media, the field of application ranges from E-commerce, social marketing (like AIDS campaign) to museum exhibits. E-commerce is an obvious example. To convince people to buy more, more persuasive messages and technologies are developed through the use of humorous and emotional communication, agents (such as price finders) or 3D representations of products and shops. For health campaigns (or any of your choice), one can imagine, 3D information spaces with agents presenting different point of views and where users are given different roles to play. In a museum you might want to highlight key points through innovative and fun interactive exhibits.