Submit Your Forums To A Free Forum Directory!
It’s not often that you find the chance to do some promotion for your website for free (other than right here), but if you have forum, you can list it on forum-sites.com for free. Just click on the forum directory and then click submit site. It may take a day or so to be approved but then you’ll have a free link to your forum. It’s only for forums, so it isn’t a directory for just any site you have. I believe it currently has a PR2 as well, so it’s got some value to it.