Driving the Message
From an evolutionary point of view, it seems that the quadrant 1 and 3 messaging mediums (see chart) represent a form of r/K selection classification. Each trades between quantity and quality. The focus in quadrant 1 is to increase the quality of the content with higher expense per message. The focus in quadrant 3 is to increase the quantity of the content with a corresponding reduction in quality and lower expense per message.