Facebook apps using Open Graph auto-sharing were pretty much all or nothing. Now Facebook is enabling app developers to offer users more finely grained control. This is infinitely sensible, though it isn’t really aimed at helping those developers increase usage. And I expect many if not most users won’t bother to go through the process. Social media’s role in content discovery is increasing, and the tools for publishers and apps evolve rapidly. Of course Facebook is notorious for tinkering with its platform to balance user experience versus marketing needs. None of these factors is changing soon.