2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/165735In this paper, we study certain geometric and topological properties of online social networks using the concept of density and geometric vector spaces. "Moi Krug" ("My Circle"), a Russian social network that promotes the principle of the "six degrees of separation" and is positioning itself as a vehicle for professionals and recruiters seeking each others' services, is used as a test vehicle.6 pages, 11 figures, presented at WMCSI'08Computers and SocietyPhysics and Societytext