To change the Privacy settings and customize them looks complicated sometimes. For the ease of Facebook user and to add more flexibility in Facebook experience Facebook has made available the Privacy settings options in the form of shortcuts on the right hand side of the profile name. Please see the screenshot to view the dropdown menu of privacy shortcuts.
Now you can email the interesting tweet which you like or feel important directly from the twitter. This is the additional feature which enhances the Social Networking experience and the virality.