There is an app my friend Joel showd me called If This Then That http://ifttt.com/ that allows apps to trigger frictionless sharing when certain actions are taken. For instance, I might want to only share songs I rate or those I 'star/favorite without the extra "are you sure" dialog.
The app maker/content owner should make it easy for me to set it up. They can create defaults but must allow me to opt out.
Because of this guardian stalking sharing app, I have deliberately never clicked any on the shared links that flooded my FB wall (past tense because I am on a FB break)
It is unfortunate that facebook actions put 'social graph' and page views before their customers. I do not blame them though, when you have 500 million people logging in almost everyday, you tend to believe you can get away with almost anything.