Activity Stream

Activity Posts: Users can write Posts on Activity Stream and Profiles.
Privacy: 3 default Privacy settings for users’ content: Public, Site Members, and Only Me.
Nested Comments: Comments under Posts are nested so users never lose track of the conversations.
Pinned Posts: Admins can pin posts to the top of the Activity Stream – these are great for making announcements.
Reporting: Users can report content they don’t agree with or find offensive. Admins get notified about it.