Check out his questions for folk choirs... though I think he missed the most important one, namely: "Why?"
I think my favourites have to be numbers 4 and 8:
Why are folk groups nearly always 'led' by a woman - not very inclusive is it? (and if you are so keen on actuosa particpatio why is everything pitched for castrati?)
Given that proper folk artists like Kate Rusby produce music which is by turns melodic, plaintive or joyous, how come most folk groups sound like The Wurzels?