I've always thought that PRS are barking up the wrong tree. In most folk clubs we sing for each others pleasure. The landlord can't give his beer away and the organiser has to cover any artists fees but landlord, organiser and floor or singaround singer are not trying to profit by ripping off the songwriter, rather they may popularise his work. The only person who IS there to profit is the booked artist and hard though his lot may be, in my humble opinion that is where PRS should make their charges.