BuddyPress.org

I am also interested in the question. So that owners of blogs can run BuddyPress within their own blog – separate from the main install.

I have buddypress enabled for multi-sites – which makes the features all accessible from http://www.example.com/site2 – without referencing back to the root site, but all of the users still show up in http://www.example.com/site2/activity.

Can http://www.example.com/site2/activity be exclusive to members of http://www.example.com/site2?