Processus de différenciation langagière dans les <i>chroniques</i> publiées sur Internet

This paper explores how linguistic heterogeneity is treated in a form of autobiographical writing published on the internet (Facebook, wattpad…) by young people who present themselves as young women, living in multicultural suburban areas, most of them with migrant backgrounds. These autobiographical writings, named "chroniques" appeared ten years ago. Hundreds of them were published, some of them reaching the milestone of 40 000 likes. 3 of these "chroniques" are studied in this paper. We first focus on alterity/identity construction processes through the introduction of new characters in the story. How are they presented and categorized as members of ethnic, generational, geographical groups? We then study dialogs, and the metalinguistic comments that frame direct and reported speech, in order to analyze how differences between the communicative practices of the characters are treated. Are these linguistic differences linked to group's belonging? What image of the teenager's language socialization diversity do they construct? How does this writing of diversity serve the narrative projects? Putting diversity into words appears as one of the main writing quality expected from "chroniqueuses".