I've actually gone to a voice coaching seminar out of curiousity. It was provided by a college for cheap, and we all did fake ads in front of everyone. It was such a BS class. I had mentioned in the intro of the class that I'd love to get in to voicing cartoons. The seminar was an hour, and we did NOTHING that related to cartoons, but said I'd do great doing cartoon voice overs. Not having done one single cartoonish voice or anything related to it. They were just advertising an expensive coaching package, hoping by giving positive feedback, we'd pay for it. Never again.
I still have no idea how to get in to it, and quite frankly its a big scary voice world. I've thought about making a site for my toons, maybe a webcomic, and doing voices, but that's also scary. People take advantage of that. They know you have no idea what to do, so they'll spew any BS to get you to buy from them.
Tystarr
Man oh man that Dan's site is uber cool!! - comment from 1992.
RicePirate
The problem is, he's been around so long, OF COURSE he's got a following, OF COURSE he's got weight in a Google search, OF COURSE he feels experienced enough to speak on the subject ... but anyone starting out, who isn't ALREADY an established figure in the industry, isn't going to benefit from avoiding professional help.