I used this with Michael Levine's Guerrilla PR: Wired for one reason. Friedman knows how to use the Internet, but Levine's book also has plenty of useful stuff. Why limit yourself?
I think what separates this from other multiple channel advocates is Friedman's unabashed enthusiasm. It's rather contagious, and I found myself smiling more and more. It's nice to smile when reading a business book.