One problem is that the term "folk club" covers everything from concerts with major guests, pre booked support acts and no floor spots through to singarounds with half a dozen people who have no interest in entertaining an audience.

Some are superb, for some to be shite would be an improvement. The trouble is that you don't know which is which before hand. It is an unfortunate fact of life that customers are more likely to tell people about disappointments than about the good things.