Z:gnu-www-ja-network-services-arent-free-or-nonfree--f84450-Thus, we don't have a rule tha/en

Thus, we don't have a rule that free systems shouldn't use (or shouldn't depend on) services (or sites) implemented with nonfree software. However, they should not depend on, suggest or encourage use of services which are SaaSS; use of SaaSS needs to be replaced by use of free software. All else being equal, it is good to favor those service providers who contribute to the community by releasing useful free software, and good to favor peer-to-peer communication over server-based centralized communication, for activities that don't inherently require a central hub.