From an interview, excerpted on his blog:
DAVID WISEHART: What advice would you give to a first-time writer thinking of publishing on Kindle?
LEE GOLDBERG: Don't do it. I still think selling your book to a publisher, and getting wide distribution in brick-and-mortar stores, is the way to go...and will always be my first choice.
He goes on to add, I have sampled hundreds of self-published books on the Kindle... and 99.9% of them aren't just awful, they border on illiterate, as if they were written by people who never graduated high school. It's astonishing just how terrible the stuff is. Putting unprofessional, hideous crap on the Kindle *will* hurt your career.