BuddyPress.org

Interesting… so potentially this could network individual blogs together into a mother-website then, right?

So if I could start dreaming I could see this as 2 plugins, 1 for the host site, and 1 for all the child sites. Each child site plugin would send information to the host site plugin. That way when a member of the “XYZ.com” community left a comment or post on an affiliate site, their activity stream on XYZ.com would be updated accordingly.

Practically speaking it would be like having one install with domain mapping to separate domains. The key difference is that each site has it’s own database and it’s own set of plugins. That way if an affiliate site goes down it doesn’t take down all the other installations.