Cover -- Contents -- Acknowledgments -- I -- 1 Introduction -- 2 Where We Have Been and Where We Are Headed -- 3 The Look and Feel of E-tactics and Their Web Sites -- II Leveraging Low Costs Online -- 4 Taking Action on the Cheap -- 5 Making Action on the Cheap -- III From Copresence to Coordination -- 6 Being Together versus Working Together -- 7 From Power in Numbers to Power Laws -- IV -- 8 A New Digital Repertoire of Contention? -- 9 Conclusion -- Methodological Appendix -- Notes -- Glossary -- References -- Index.