I bought this book as it was the amazon best seller guide for Dublin.
We [4 blokes on a mid-life crisis long weekend] visited Dublin Easter 2007, and found the guide to be of little use, it seems to be a diary (but without dates) of the author's time spent in Dublin. They have attempted to provide a guide to visiting Dublin, but if you want to find information quickly this is not the book for you (for instance Leopardstown racetrack there are two entries in the book, but only one is indexed, the other we stumbled upon looking for something else.)
One of my companions had the eyewitness Dublin guide, we found that was better presented and easier to find information quickly, I recommend you look at that for comparison before making your buying decision.