This document discusses mass communication and how it relates to real estate. It defines mass communication as communicating with large audiences through storytelling and persuasive messages. It then gives examples of how real estate start-ups can use mass communication tools like MLS, newspapers, magazines, and the internet to advertise properties for sale to large audiences. Specifically, it discusses how a real estate company can search for properties for sale on websites like Realtor.com and how basic mass communication principles can help systematically reach customers even at a local level with tactics like yard signs.