Thank you everyone for your feed back.
Floyd, I was thinking in that perspective that is why I wanted some feedback from fellow artists and their experiences. Free marketing is free marketing. If I weren't in the middle of two commissions and getting ready for events coming up, or had some free time, I may have considered it a little further. Because I agree, exposure could go a long way.
It's like this website, for instance. Even though I have not made a sale since I have joined, it has provided me with free knowledge and has been a great source of encouragement... thanks to all of you people. So I am not bummed that I have not made a sale here, but thankful for what I do get out of it.