Thanks James Graham
Trulia is a site that allows real estate professionals to post their listing to gain more exposure. You'll notice that beneath each listing is a website name where the listing came from. That being said, as a For Sale By Owner you wouldn't be able to list your home on this site. If you were using an agent and their brokerage website had a feed to this site, then it could be done.
I'm sorry about your experience with your agent. If you have any further questions during the home selling process, call or email me and I'd be happy to help you out.