FSBOs have made quite a name in the real estate industry. The MLS listings is one of the most visited listings on the internet. To get listed on the MLS one needs to first pay a flat fee or a flat rate. This is the advance paid by the seller in return for getting his name listed on the MLS. This fee may range from $99/month to $299 dollars and up.
Generally this cost is lower than what one would have to pay the agent if a deal were to be made with him as the mediator. Once your name has been listed on one of the MLS then it will also be listed on Realtor.com, run by The National Association of Realtors.
Most of the buyers are looking for FSBOs and hence to have a listing on Realter.com helps finding buyers easily for your house. However if a buyer's agent comes across your house on the MLS and wants to make a deal then you will have to pay the buyer's agent.
Some flat rate realty providers offer additional services on a fee-for-service basis for sellers wanting additional assistance in things like negotiating prices or terms, arranging for financing, inspections or closing.
If you opt to have yourself listed in the MLS then you should not expect your name to be visible in one of the MLS of a different state ie MLS is not a nationalized concept. First a name appears on the local listings. MLS are local listings with their own local rules. FSBOs on these local MLSs are further listed on Realter.com where in your name, address and other personal details are not displayed.
Hence this forms a cheap and safe way to sell a real estate using the MLS hence finding apt buyers for your property.