Interaction vs. Participation

Frank Popper claims participation refers to the relationship between a spectator and an already existing open-ended art work, whereas the term interaction implies a two-way interplay between an individual and an artificial intelligence system. In happenings the audience members are simply participants in the art, and through this they affect the art. On the other hand, Telematic art, or interactive new media, allows the audience the ability to control. Happenings give spectators a situation in which to act, while telematic art give spectators to tools to play god. I would agree with these statements, but I wonder what we would call it if participation and interaction were combined in an art form. Can this be done? If audience members were each given something which they could control, and through their controlling of the digital object they affected a larger situation, would this be telematic art or a happening? Would it have a different name? Could one argue that the World Wide Web has created an alternate space where all that is happening is exactly this? Perhaps we already have a name for it... the blogsphere.