You can advertize your house on Craigslist for free in Central NJ location. It will generate a lot of traffic but make sure not to post your email address as not to be harvested.
Your question asked about advertising. While you may have meant listing, the answer to your question, as it is written, is that FSBOs can in fact advertise on Trulia. Again, be sure to read the answers on the thread that I referred you to in my previous post.