Namepros now has at the bottom of each page a box called the Namepros business directory. You can list your business there if you are a business member. Namepros is usually thought of as the "free" forum, but they have added other tiers to their membership.
They now have personal,supporter and business. Personal is still free, supporter is $5 a month and business is $10 a month. 20% discount if you pay yearly. Benefits include increased avatar size, the number of sales threads per day and the number of private messages that can be stored.
Here is the link http://www.namepros.com/account-upgrades.html
It will be interesting to see if the directory becomes popular.