Bry,
I hear ya man, but this is the nature of the business. There is something posted on Voices.com, maybe in the Blogs somewhere, that describes this situation. The client does have the option to send a response to you since they have your contact info. But, since there is a potential for each client to get about 100 responses to a posting, it just is not practical for them to send a response to every
VO talent that responds. However, I did read that Voices.com is working on some feature that allows clients to send a mass response to all that send in a demo. I'm not trying to defend Voices.com, but this is just how things are.
I get the same non response from Voice123, VoiceHunter as well as from Cast Images, the talent agency that I am signed with locally. I just do the best I can in my audition, send it in, and move on to the next one or just forget about it. Its just the nature of the business.
Jon