Hi, Bob! In this market it's important to use all venues available to the agent in order to sell properties and find homes for the buyers. Technological advances have made marketing and research easier for the real estate professional. As you found out, Trulia is one of them. Perhaps when you interview real estate agents, you might want to ask them how they find properties (if you're a buyer), or if you're a homeowner trying to sell your home, ask how the property will be marketed...and then check them out. Hope this helps.