VAN GOGH TV'S : the invention of social media at documenta 9 in 1992

Introduction: "Hallo TV"; From subject to project: The intellectual and cultural environment of Piazza virtuale; Before and after Piazza virtuale; The making of Piazza virtuale; Piazza virtuale on air: 100 days, 600 hours of programming; "The show is as intelligent as its audience": The reception of Piazza virtuale; Conclusion: "Through the telephone lines a desire, formless and unaware of itself"; Appendix 1 The segments of Piazza virtuale; Appendix 2 The Piazzettas; Appendix 3 Technology; Acknowledgements; Bibliography.