I agree that the site needs some type of buy/sell/trade section, especially if the post similar to Cecils are not allowed. What's the harm in members helping each other out for the betterment of their ponds?

As Cecil stated earlier keep full time business off the section and allow members only to post in the section. I think it could be very valuable to the site and possibly raise a decent amount of money for the site also.

Maybe make it a rule you have to donate to the site in order to post anything in the section?