http://www.rmama.com/
The Rocky Mountain Affiliate Manager Association meets monthly. The location changes, but it's in Salt Lake somewhere, from 1-5pm. Companies like Overstock.com and Backcountry.com attend.
If you don't have an organization like this, start one. It can be very valuable to your affiliate program.
I'm writing about setting up an affiliate program for your small business. I hope to do a follow-up article on how to supplement or replace your day job with affiliate marketing. I also want to do it myself so I understand it from both ends.
I just added an affiliate ad for 3 free audiobooks. When you click this we both win. You get free books (or a good deal on Commcast or web hosting, etc) and I get a small commission for referring you. Win-win.