In this article we present a conceptual analysis of the notion of learners' self-organization in CSCL macro-scripts. We highlight that taking into account self-organization as an emergent feature of activity requires considering issues such as conceptual and technological tools to support learners' self-organization, maintenance of coherence between the script pedagogical objective and the emergent organization and between the technological setting and the emergent activity. (http://www.springerlink.com/content/v6208p17g3t61w34/)