Marketing has a marketing problem

Seth's Blog: Marketing has a marketing problem:

Here's what the email I got the other day said:

"...always assumed you were a blowhard who didn't know his ass from his elbow, because you present yourself as a marketing guru and I find that those who say they are marketing gurus seldom know anything about marketing."

Yikes.

Name a cellist. Did you say, "Yo Yo Ma"? Of course you did. There are other cellists that might be as good in some ways, but you don't know who they are. Could it be because Mr. Ma knows something about marketing?