BuddyPress.org

Thank you Paul.

Yes regular WP is enough, not multisite (one basic blog only for members to post in articles).

Now I see that “BuddyPress Land” on buddypress.org is run in /community/ folder. URL’s created by BP software shows all is in /community subdirectory. I don’t mind if people must dive deeper to get to BP land features, as long as they can register and login from all pages including “/”. I think there was a page here somewhere explaining how to do that, or I will need to have have it set up by someone.

One thing crossed my mind, will I be able to put profiles in the root — example.org/username/ with the ‘define’ added into config file, if WP/BP are installed in /community/ sub folder? Most probably it would become example.org/community/username/
define ( ‘BP_ENABLE_ROOT_PROFILES’, true );