Z:gnu-www-ja-network-services-arent-free-or-nonfree--ea6ceb-If some of them are nonfree, t/en

If some of them are nonfree, that usually doesn't directly affect users of the service. They are not running those programs; the service operator is running them. In a special situation, these programs can indirectly affect the users of the service: if the service holds private information, users might be concerned that nonfree programs on the server might have back doors allowing someone else to see their data. In effect, nonfree programs on the server require users to trust those programs' developers as well as the service operator. How significant this is in practice depends on the details, including what jobs the nonfree programs do.