What aspect of consciousness does Rosenberg argue we shouldn’t take seriously? A: introspection
The phenomenon of seeing things when you don’t have a conscious visual experience of them is known as what? A: blindsight
If you haven't explored Sam Harris's Website, there's no better time like the present. I think it was posted before, but Sam discusses free will in an exchange with Dan Dennett. The debate is in the blog section of his site: www.samharris.org/blog.
The discussion is useful in addition to Rosenberg's latest chapters.