In my area, the majority of the ads on CL don't say much about seasoned firewood, which I assume means it is not. So, to differentiate the wood I sell, I clearly state that my wood is well seasoned and was cut, split, and stacked during time period "x" and has been drying in my shed ever since. I am a small time seller, but have a good group of customers and those relationships have paid dividends as I have picked up new customers who are friends of my established people. Right now I am getting to the end of my firewood stock that was cut during the fall of 2008 and should have it all sold by this weekend. Then I will change my ad to reflect that the 2 year old seasoned wood is gone, and I now have seasoned firewood for sale that was cut during the fall of 2009. I also clearly state in my ad that my wood will be dry and ready to burn upon delivery and that I do not sell "green" firewood. So, I tell potential customers exactly what I am selling and let them decide if they want to buy it from me or not. If they want to buy it, great. If not, then buy from someone else. If I don't sell it this year, it can sit in one of my sheds for another year. It won't go bad.