The only person that I know that sells regularly in E TN is Lisa Chesney, Chesney here on the boards. If you need starter bug cultures or starter fly cultures, I can help with that. Most of us can help with some starter plant clippings with a little advanced notice.
As far as members that I chat with regularly, Chesney lives northeast of Knoxville. Frogmanchu lives in Knoxville. He has been really busy so not quite as active. Dendgroguy(haunting, isn't it?) lives in Johnson City but is in Florida right now I think. And I live in Kingsport.
We have very few folks in the area. We are pretty spread out. To get a frog fix, I have been going to some of the shows when I am not over pestering Lisa.
Froggers are always welcome here should you ever be up this way. While I am new to PDF's, I'll help in any way that I can.
Also, you may want to introduce yourself in the regional section so those interested know that you are in Chat.