For about three years Adam Lee has been criticizing Ayn Rand's book Atlas Shrugged chapter by chapter, section by section, on his Daylight Atheism blog. His criticisms of that book, and of Ayn Rand, were also critical of Objectivism. Objectivism is the name given to the world view that the atheist, and self claimed advocate for reason and individualism, Ayn Rand tried to promote with her books.
Atlas Shrugged the Ideologocal Event Horizon summarizes Lee's criticisms of Ayn Rand and her Objectivist movement. He argues that Ayn Rand's Objectivism fails to deliver on its claims of being rooted in reason and individualism. Ayn Rand's fictional books are indeed unrealistic fantasies that attempt to promote a flawed philosophy. Various Republicans reject Objectivism as being tainted by its link to atheism (as if that link automatically defeats the philosophy), but they continue to promote her books anyway as providing insight into good economic policy. As a guide for economic policy we lack sufficient reasons to think her writings are any more sophisticated or realistic than her Objectivism philosophy.