Tom Peters Seth Godin moves to the front ranks of Internet Marketing Gurus with this masterful book. It's trite to say it, but this is a real "must read."

Business Week Seth Godin is the ultimate entrepreneur for the Information Age.

Robert Tercek Senior Vice-President, Sony Pictures Entertainment The principles of Permission Marketing are incredibly valuable to everyone involved in media today.

Lester Wunderman Chairman-Emeritus of Wunderman Cato Johnson, the largest direct-marketing firm in the world; author of Being Direct. Advertisers are going to have to learn how to deliver messages with frequency and low cost if they are to cope with the increasing competition for the consumer's attention. Seth Godin's Permission Marketing is a big idea.

William C. Taylor Founding Editor, Fast Company Godin and his colleagues are working to persuade some of the most powerful companies in the world to reinvent how they relate to their customers. His argument is as stark as it is radical: Advertising just doesn't work as well as it used to -- in part because there's so much of it, in part because people have learned to ignore it, in part because the rise of the Net means that companies can go beyond it.

Mark Kwamme CEO, CKS Group Permission Marketing is a testament to Godin's profound grasp of digital marketing. "Interruption Marketers" everywhere would do well to read this book.

Eric Hippeau Chaiman, Ziff-Davis, Inc. Finally, here's a measurable method for marketing in a world filled with clutter.