BuddyPress.org

I have a fresh WP install which I have modified to work as a network – although as yet I don’t have any blogs other than the ‘root’ one.

My aim is to have a blogging environment for members, using a few bits of BuddyPress to provide site wide activity updates and profiles.

Do I network install BP on WordPress, or just activate it on the ‘root’ site?

Also, are subsequent BP specific plugins network activated or again just the ‘root’ site?

Thanks

Dave