How would you contrast this opinion to your current thoughts on RFS7 (Facebook Instant Personalization)? Facebook has shown themselves to be developer-hostile

How would you contrast this opinion to your current thoughts on RFS7 (Facebook Instant Personalization)? Facebook has shown themselves to be developer-hostile in the past as well, and they represent all of the common risks of building on someone else's platform. Are their boundaries better drawn? Is the magnitude of the opportunity on Facebook larger to the point of justifying the risk?