Episode 31 of the Escape From Illustration Island podcast features an audio interview with Artist Representative Scott Hull. Together we discuss the ins and outs of artist representation, marketing, promotion, and ways that Illustrators can bridge the gap and connect with potential clients.
Here are links to some of the things mentioned on the show:
Scott Hull Associates
Penelope Dullaghan
Michael Bast
Art & Fear
Marketing with Meaning
Lynchpin: Are You Indispensable?
How to Draw a Bunny
Fusion
The Creative Finder
Dripbook
ILLUSTRATION AGE 
Thoughts?