Dropbox wish to stop thinking of data stored on the service as files and instead think of it as types of data. In that spirit the Dropbox lunched 2 new features for its site Wed: a new preview for document files, and a new design for albums of pictures you have shared.
A new pictures view will let you see all of the pictures save on your Dropbox, organized chronologically.
Pictures can be selected from that view, and shared as a virtual collection with a frends on Fbook, Twitter and email. On Fbook images can be shared in a personal msg or on a wall, and on Twitter images will shown up as a Twitter card.
Document previews will let Dropbox users click on any file within Dropbox and get a instant preview without having to download the file. So you can know quickly you were giving the correct file to a collegue without having to download it 1st.