Via this Fragments from Floyd post, I see from the National Geographic, Appalachians Are Finding Pride in Mountain Twang. They need to throw that in the pot stewing over the candidates' accents in the gubernatorial race in Virginia.
The article says, among other things:
"What we're finding is that people are taking a new pride in their mountain culture," said linguistics professor Walt Wolfram of North Carolina State University. "That includes their language. People are making the comment, 'We're hillbillies, but we're proud of it. That's who we are.'"