Of course, a lot of people - on seeing the cover and the title - will dismiss it and lump it under the umbrella of conspiracy theory. Leftists will for sure. I think it would be hard for them to make that case though, as a great deal of the book focuses on the actions Obama has taken that are pretty much public record, including commentary from both critics and adherents of Obama, from senators to journalists.
The book documents his rise; showing you what influenced him growing up, who is mentors were (socialists), who he surrounded himself with once he became President (socialists again). It shows his pandering to Islamic nations, his alienating of America's traditional allies, his attack on free speech and economics, his internationalist aspirations, the White House's refusal to use the terms "jihad", "war on terror", and certainly never to use "Islam" and "terrorism" in the same sentence for fear of insulting Islam.
If Obama isn't a Muslim (and the book doesn't make that claim in black and white), there is no mistaking his Muslim heritage, the many "outreaches" he has made toward Muslims at home and abroad, and the lack of criticism of Sharia and it's many abuses of human rights and the rights of women.
Having finished reading the book, I couldn't make a comment about Obama any better than the one attributed to George W. Bush when he was supposed to have come in fuming one day and said of Obama, "This is a dangerous world, and this cat isn't remotely qualified to handle it. This guy has no clue, I promise you".
If he said it, it was very prescient.
[update] the Bush quote above is not from the book; in fact, Bush is not mentioned a whole lot. I thought I'd better mention this fact due to the comment by Psycho Milt below. Although I personally think Bush was a better President, this comparison is not made in the book, and it is my view and not the author's.
A must read book - 5/5 stars