This is interesting. My little test didn't produce any results. That's probably not surprising. But what's interesting is that if I do a search on just the words "folk music" (with quotes), I find the Mudcat on the third page of links. I don't know or really care about what that might or might not mean. But I think those kinds of surprises are an interesting aspect of doing google searches.

http://www.google.com/search?q=%22folk+music%22&hl=en&lr=&start=20&sa=N