i would not do it. If you are so worried about paying a realtor to take care of everything (which is worth it), than just make sure that the price you WANT covers the cost of real estate fees. In other words, the Purchaser will be paying them in the price they pay you for your house. Negotiating and dealing with potential purchasers can be a nightmare doing it on your own. Have you ever tried selling something on Craigslist? Take all the negatives from that experience and quadruple it for what its like selling your own home.
Seriously, get a professional and you will be happy with the result.
Exposure is less, tire kickers are more, thieves, nosy people, etc.
If you want 'x' number of dollars in your pocket, than you list it at 'y' to arrive at 'x' when everything is paid out. Its not complicated.