Craigslist, FSBO.com, Newspapers all accept advertising for homes. Trulia doesn't accept FSBO's at this time.
One thought, no one wants a Realtor's expense but when a home doesn't sell, many want our expertise. Having spent 30 years in sales and the last 10+ years in Real Estate, I can tell you that a good agent brings value to a transaction and will net you more than you will likely get on your own, especially in this market.
In most cases if a FSBO doesn't sell in the first few days, it won't sell. Most FSBO's that do sell are sold to family, friends or someone indirectly connected to the seller like a friend of a friend.
Most FSBO buyers don't want to spend the retail price a commission will cost. If you reduce the price to accommodate that buyer, you end up with no benefit and all the work, liability and expenses.
Before you try it on your own, interview some good local agents and see what they have to say. At least that way, however you decide you'll have the benefit of full disclosure of your options.