If your post was meant to mean on this site in particular, Trulia at this time only accepts agent/broker listings. You must be represented and the agent/broker can list your house on this site.
Whether you are represented by an agent or not, the blog attached to the link below may be of some interest to you. While it is directed to FSBOs, there are some ideas that you possibly could implement to augment your agent's marketing plan, if you are represented. Please, if represented, always keep your agent abreast of anything you do on your own. Good luck.
Our recommendation is to contact a few different real estate professionals and schedule meetings with them for the expressed purpose of finding out about their company and personal marketing plans and what their plan would be to sell your home in a reasonable time period.