By default all BuddyPress site users can create and manage groups. But many network administartions, specially those running social networks of small company, college or school don’t want members on their website to be able to create their own groups, but rather just participate in the ones created by the admin or superadmin.
With BuddyPress Rate Forum Posts plugin your BuddyPress site memebrs can rate forum posts. It highlights good posts whereas poor posts are diminished. Highlighted karma points are visible for each site member. Note: The plugin is only for group forums, it is yet not compatible with BuddyPress site wide forums feature.
You can moderate new BuddyPress members, fight spams, set BuddyPress groups and sites and allows new members to join them from the registration page by using BuddyPress Registration Options plugin.
Here is a list of seven popular Facebook groups specially for bloggers. If you are a bloggers you can join these group for sharing your posts to a vast community of other bloggers, you can drive traffic, get new post ideas etc.
Provide all your your WordPress site widgets with BuddyPress specific fields option. Display them conditionally on specific BuddyPress pages.