If you are serious about encouraging new singers run a workshop.[jim carroll].
yes,and perhaps instrument workshops too.
The sign of a good club [imo]is among other things good organisation,it is perfectly possible and can be acceptable if a weak singer,is followed by a good singer or a resident,so this is the reponsibilty of the organiser or mc.
in this way singers who may or may have potential[but need help] can be encouraged,and sandwiched between good performers,making it more acceptable for the paying public.
Bad Manners,does come in all shapes and sizes,it is the responsibility of the organiser,to have a decent mc,so that everyone gets a proper introduction,and gets the guests name correct[it happens more frequently than one thinks]
some while ago,I was guesting at a folk festival.and the MC[a professional performer himself,introduced me ;now we have Dick Miles,what sort of a bloody introduction is that.
this MC was paid to be at that festival,whether he likes the performer or not,he is paid to present and introduce people properly,this involves at the very least,stating what the performer does [plays concertina sings traditional songs is over here on tour from Ireland etc etc]and convincing the audience that the person is good.