From the Frequently Asked Questions page:

http://history-sites.com/tncwmb/faq.htm#sales

May I advertise a product, promote a book, etc., on the message board?

Yes, but with limitations. I do not allow "off topic" and/or commercial advertisements or notices to be posted on the message board. However, if you're a contributor to this site and you'd like to "plug" your new book, tell us about an SCV or CWRT meeting, re-enactment, tour or something else of interest to the participants here, please do so. If I feel your posting is "off topic" or inappropiate, I will delete it and email you with my reason(s). If you are not sure you're posting falls within the approved criteria, send it to me by email, webmaster@history-sites.com and I will approve or reject it.

If you're a regular contributor to the Tennessee in the Civil War Message Board and have responded to and attempted to help others with their questions, I will reward your participation by placing an "ad" for your book (remember, it must somehow be related to the Civil War) on our "Authors" page. If you are an author, website owner or wish to promote a Civil War related business or product you may always put links or ads on your "User Profile" page, but also be aware that your "User Profile" won't appear unless you have a non-commercial posting on the message board. If you're an author, I encourage and recommend you to list your books and articles.