Sharing
direct upload of iPhone pictures, either from the camera or from your photo library
complete control over who sees your posts: mark any picture as 'friends only' or 'public', and allow or block individuals or groups on any post
Twitter integration, to instantly share your public pictures as Twitter updates: the easiest way to share pictures on Twitter and enable conversation
video playback
public profiles for sharing your posts with the world and making new friends
via Radar | Radar Blog.