I am creating a blog site that will have several blogs using multiple installs of wordpress. I have seen a number of tutorials that show how to use one user database for multiple sites. This would be good since a user would only need to register and sign in once for all the blogs.
However, each blog will have its own editors. If I go with a single user database, does that mean that someone who is given the role as editor will have access to all the blogs as an editor? Or is there someway of assigning an editor to just one of the blogs?