I personally like diving through the bins/barrels for the long lost treasures (archived and archaic music). To limit the definition is to "box" the musical spirit of many performers and songwriters who are not easily catergorized. Just like mallards, the ugly, lame, and dead ducks are ducks too. Don't be surprised to find an occasional swan who crosses over categories either since neither ducks nor swans read labels like Folk Traditional, 60's kinda Folk, Folksy Sounding Wannabes, etc. Ducks and boxes aside, I agree with Earl for clarity of purpose and Steve (Electric Kool Aid Testing just might be the way to acid test -pls forgive the pun- if a song or singer is "worthy"). Just a reminder that being a folk snob is most likely to be seen as an oxymoron by others, including the long dead folks who created and sung the songs in the first place.