You use the word "listing" and this suggests your home is listed, as with a broker and agent. They would enter the listing as a matter of good marketing for you. Many good brokers have a practiceof all thier listings are on Trulia. Some MLS have agreements for all their listings to be on Trulia. Type your address into the main slot above and see if your home comes up. If you are selling on your own, FSBO we call it, you can do enter it your self. Follow the prompts.