Once in a long while you get a book that inspires you with a lot of great small ideas. Spidering Hacks is just that type of book. The web has a wealth of structured and semi-structured that is just waiting to be mined with automated tools. This book not only teaches you how to get the data out of these sources, but gives you idea about where to look for information and what to do with it. This book demonstrates everything I like in a technical book. It not only describes how things are done. It also gives practical examples of how the technology can be useful in the real world, and presents them enthusiastically. It makes you want to go out and implement all of the ideas and to keep on going with some of your own. Nitpicks I have with the book are minor. The 'Hacks' format seems imposed, for example, hack #8 is about installing CPAN. I don't think that section should be left out, but I don't think it's a hack either. But hey, I don't care that much about the structure as long as it isn't an imposing flaw and the content within the structure is great, as it is with this book. Have to say, O'Reilly is on a roll with the Hacks series. They have all been fine books.