[DiapDealer]

I've always found the authors themselves to be very responsive to issues with their ebooks (provided I don't come across as confrontational). Blog, email, Twitter, Facebook--most authors have SOME way of contacting them in this day and age. I've hit many of them up with questions of availability, formatting, pricing, ... etc. Some take an active interest, and some put me in contact with other individuals who can help.

When it comes to Terry Brooks, Shawn Speakman has been his online surrogate (and friend) for many, many years. He's fairly easy to get in touch with.