That is a great function I never knew about.
However, having tried it a little, all of the sidebar links go back to the other blog. I guess to be more exact, I want to have a separate site that draws certain articles from the main site, so that people logged into the separate site can have special download privileges.
I guess I could just do something roles-based on the main site, but it would be better to send duplicate content that could be stripped down and manipulated to be displayed differently on the separate blog. Any other thought?