I remember one regular young attendee at a folk club being told by an MC not to bother bringing her guitar down to the club the following week as it would be busy with other singers - he then hogged about 20 minutes for himself that week to sing unaccompanied (badly) whilst everyone headed to the bar - what great encouragement! Fortunately following those incidents that MC was given his marching orders by the committee shortly afterwards and the young lady in question is doing rather well on the folk and acoustic music circuit :-)