I thought he made great points, backed up with great examples and evidence, so its great as a resource and for quoting. Although I thought he made his arguments in a polemic and infantile manner at times.
I think we could do a much better book, and one more specific to Islam
BTW his latest book called The Greatest Show on Earth: The Evidence for Evolution is available on Amazon.co.uk on preorder for just ?10 (the hardcore version). The release date is the 3rd of September.
and for these reasons, I dont think the book achieves its mission as well as it could do. It may convince those that have major doubts, but alienates the harcore majority of muslims.