Making "Do Not Share" checked by default
From DeliciousSafari Documentation
If you don't want to share most of your Delicious bookmarks, you can make "Do not share" the default option for saving new bookmarks. To do so, open Terminal from the Utilities folder and run the following command:
defaults write com.delicioussafari.DeliciousSafari ShouldShareByDefault -bool NO
You will need to restart Safari for the change to take effect.
