I've posted pieces on the Jerome Corsi book, The Obama Nation a couple of times already. But until that book is recognized for the load of hooey it apparently is, we liberal bloggers will have to keep hammering away.
Now, I'm one of the first people to jump on critics who tear apart a book they haven't read or a movie they haven't seen. Full disclosure: I have not read The Obama Nation yet. But there is a reason I'm willing to criticize it. Many different web sites (including Obama's own) have started printing passages followed by refutations. Pages and pages and pages. One of those sites is Media Matters for America.
MMFA is falsely maligned by people like Bill O'Reilly as a left-wing "smear" site. That--no matter what you've heard--isn't true. The bias at Media Matters is in the subjects they choose to cover, and some editorializing in their summaries. But they always include transcripts, and often audio and video, so that you can decide for yourself. It's probably the most honest news analysis site you'll find.
Paul Waldman of MMFA was interviewed on C-Span regarding the Corsi book. If you're interested in this story, it is must-see.