This article proposes an interpretation of the Wikipedia model of coordination and governance, focused on the forms of vigilance that Wikipedians use to monitor and control other contributors. Wikipedia's procedural system of self-regulation solves conflicts through discussion, mediation and sanctions, by organizing tension between the local control of statements and the centralized measures against those who repeatedly contravene the encyclopaedia's principles. The authors describe the architecture of the arenas and rules that make it possible to solve publishing conflicts without transgressing the principle of an unconditional openness to everyone's right to contribute and to monitor others.