2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/220695A new metric is introduced, inspired by the Hirsch {\it h-index}, to measure the impact of a wiki site. A table of wikiFactors is presented for a number of wikis, in particular those oriented towards scientific topics. The wikiFactor is defined as the number of web pages, wF, that have had $\ge 1000$wF visits.1 page, 1 table. Corrected a typoPhysics and Societytext