The gal's sites are affiliated with us only in the sense that we are the administrators of them (i.e. their webmasters) but the gals are all full owners of the content and everything on the site. We just help them make it happen.
We've entertained the idea of a group membership for all three, but we aren't sure how it would work since each gal owns their own site separately. It's something we may do down the line if we can figure out a way.