Comment on this news article
Quickly Toggle Sharing Preferences in OS X with an AppleScript - Lifehacker
http://news.google.com/news/url?sa=t&fd=R&usg=AFQjCNFnH24-T5l9Ri5GnnIEmomnXYNvyA&url=http://lifehacker.com/5745770/toggle-sharing-preferences-in-os-x-with-a-one-click-applescript