I’m not incredibly concerned about some apps sucking out my address book. After all I do have some degree of control on that.
Yet I am a bit annoyed about my own address being posted all over the place by thousands of people and their apps.
In other words: I can stop using Path today (I won’t), but my address will continue to be posted to hundreds of different sites every day without any control. The moment you give any piece of information to somebody with a smartphone, that piece of information is no longer private. End of story.