Ok maybe I over egged that.
But Drayton is world renowned and his techniques get results. His books are best sellers and he'd quoted all over the marketing press. He launched his blog last year (here's my claim to fame) after I suggested he should.
His blog is far better than mine and his language is far more colourful. Take a look you'll get some great insights. By his books you'll learn more than you could ever use.
Here's Drayton's Blog, enjoy!