Originally, barkers were vital in drumming up business for shows before modern advertising. Centuries ago, the barker was as much a part of the fair as the jugglers and acrobats.
Pro Tip 2/3
Attention-Grabbing
The barker's role is to be loud and persuasive to draw in an audience. The barker captivated the crowd with tales of the amazing feats inside the tent.
Pro Tip 3/3
Public Perception
Barkers are sometimes seen as annoying or intrusive by those not interested in the event. Locals often avoided the main square when they heard the barker's familiar shout.