I am creating the different blogs for my users in my multisite install.
Is it neccesary to add ALL users to ALL blogs in order to let logged in users comment on posts in other blogs in the multisite? (I am setting default in all blogs that users must be logged in in order to comment).
And if so, will the other users have the default role of "subscriber" on the other blogs, while they are admins on their own? If so, it will only mess up everything to use heavy plugins regarding user roles.