User Blogs Question

hi there I got a question which I'm not quite sure how to word but let me give it a try.

FYI I'm trying to do this using the Social theme.

I want to offer user blogs to registered members I don't want them to spawn their own actual blogs. what I mean is that I want everything to display within the default Social theme. Much like the main blog does so that I have control over the layoutstyle and (preferably if possible)sidebar content.

basically I would like the user blogs let's say http://avi.buddypressthemes.org to display like http://buddypressthemes.org/blog. Not talking about URL display on talking about the actual page.

so can this be done and if so any suggestions on how to do it.