Charlie - The homes on Trulia are actually for SALE. Unlike Zillow where they post estimated values based on the information in public records and then people can go in and update the information which will change the value. But the homes are not necessarily for sale on that site.
If you want to list your home for sale, I would be happy to help you out. The first step is a personal visit to your home so that I can learn about the unique features of your home. Then I prepare a detailed market analysis and a custom marketing plan for you. Feel free to contact me for more information.