observe a general decrease in the number of editors taking this role in most of the observed communities, after a peak in the initial years.
Figure 8. Vital sign: Special functions - very active coordinators. Evolution of the number of very active coordinators over the years, broken down by the lustrum of their first edit. An editor is considered a very active coordinator in a given month if they have made at least 100 edits in namespaces “Wikipedia” or “Help” in that month; in the graph, data are accumulated by year so that each year includes all the users who have been very active coordinators in at least a month of that year. The colors show the number of very active coordinators belonging to each generation (lustrum of the first edit) each year.
[T8] Very active coordinators: we believe that the number of coordinators (“very active editors” in Wikipedia namespace) should be at least 20, and always larger than the number of very active technical editors, since taking coordination activities is key to engaging editors into contests, Wikiprojects, among others.
[T9] Very active technical editors proportion: Furthermore, the proportion of coordinators should be a minimum of 5–15% of the very active editors to guarantee there are common initiatives that involve everyone. A low proportion of coordinators implies that very active editors are working in silos.
