BuddyPress.org

@Mike: I know there is the group blog plugin but it’s not deeply integrated into groups. I haven’t tried the new links plugin altho’ it sounds great. I’m not aware of any plugins to accomplish group notifications. bp-events shows great promise but needs some work. And there really is no way to have group documents that I know of (downloads or collaborative wiki pages). But I’m sure all of this will come in time. My main point is that out of the box… BuddyPress Groups are pretty limited. They basically just group people and allow them to make comments and forum posts.